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    Male teacher and girl students conducting scientific experiment at microscope in laboratory classroom — Stock Photo
    Male teacher and girl students conducting scientific experiment at microscope in laboratory classroom
    Surprised students conducting scientific experiment, watching chemical reaction in classroom laboratory — Stock Photo
    Surprised students conducting scientific experiment, watching chemical reaction in classroom laboratory
    Male science teacher and students laughing, conducting scientific experiment in laboratory classroom — Stock Photo
    Male science teacher and students laughing, conducting scientific experiment in laboratory classroom
    Students watching chemical reaction, conducting scientific experiment in laboratory classroom — Stock Photo
    Students watching chemical reaction, conducting scientific experiment in laboratory classroom
    Curious, smiling students watching chemical reaction, conducting scientific experiment in laboratory classroom — Stock Photo
    Curious, smiling students watching chemical reaction, conducting scientific experiment in laboratory classroom
    View of Conductor leading orchestra — Stock Photo
    View of Conductor leading orchestra
    Behind view of school aged boy learning from teacher conducting — Stock Photo
    Behind view of school aged boy learning from teacher conducting
    Behind view of school aged boy learning from teacher conducting — Stock Photo
    Behind view of school aged boy learning from teacher conducting
    Behind view of school aged boy learning from teacher conducting — Stock Photo
    Behind view of school aged boy learning from teacher conducting
    Side view of school aged boy learning from teacher conducting cl — Stock Photo
    Side view of school aged boy learning from teacher conducting cl
    Side view of school aged boy learning from teacher conducting cl — Stock Photo
    Side view of school aged boy learning from teacher conducting cl
    Side view of school aged boy learning from teacher conducting cl — Stock Photo
    Side view of school aged boy learning from teacher conducting cl
    Side view of a Caucasian female conductor and a multi-ethnic group of teenage male and female choristers standing opposite, singing on the stage of a school theatre during rehearsals for a performance — Stock Photo
    Side view of a Caucasian female conductor and a multi-ethnic group of teenage male and female choristers standing opposite, singing on the stage of a school theatre during rehearsals for a performance
    High angle side view of a Caucasian male teacher sitting in a classroom conducting a multi-ethnic group of teenage male and female musicians at a school band practice — Stock Photo
    High angle side view of a Caucasian male teacher sitting in a classroom conducting a multi-ethnic group of teenage male and female musicians at a school band practice
    Rear view of a Caucasian woman conductor directing a multi-ethnic group of teenage male and female choristers holding sheet music and singing standing on the stage of a school theatre during rehearsals for a performance — Stock Photo
    Rear view of a Caucasian woman conductor directing a multi-ethnic group of teenage male and female choristers holding sheet music and singing standing on the stage of a school theatre during rehearsals for a performance
    High angle front view of a Caucasian male teacher sitting in a classroom conducting a multi-ethnic group of teenage male and female musicians at a school band practice — Stock Photo
    High angle front view of a Caucasian male teacher sitting in a classroom conducting a multi-ethnic group of teenage male and female musicians at a school band practice
    Rear view of a Caucasian teenage boy standing in the auditorium directing a teenage girl on stage in an empty school theatre during rehearsals for a performance — Stock Photo
    Rear view of a Caucasian teenage boy standing in the auditorium directing a teenage girl on stage in an empty school theatre during rehearsals for a performance
    Over the shoulder view of a Caucasian female conductor and a multi-ethnic group of teenage male and female choristers standing opposite each other, the choir holding sheet music and singing — Stock Photo
    Over the shoulder view of a Caucasian female conductor and a multi-ethnic group of teenage male and female choristers standing opposite each other, the choir holding sheet music and singing
    Rear view of a Caucasian woman sitting and conducting a multi-ethnic group of male and female teenage musicians playing at a school band practice — Stock Photo
    Rear view of a Caucasian woman sitting and conducting a multi-ethnic group of male and female teenage musicians playing at a school band practice
    Front view of a multi-ethnic group of teenage male and female choristers holding sheet music and singing standing on the stage of a school theatre during rehearsals for a performance, with the arm of the female conductor in the foreground — Stock Photo
    Front view of a multi-ethnic group of teenage male and female choristers holding sheet music and singing standing on the stage of a school theatre during rehearsals for a performance, with the arm of the female conductor in the foreground
    Side view close up of a Caucasian female conductor directing a group of teenage male and female choristers holding sheet music and singing standing on the stage of a school theatre during rehearsals for a performance — Stock Photo
    Side view close up of a Caucasian female conductor directing a group of teenage male and female choristers holding sheet music and singing standing on the stage of a school theatre during rehearsals for a performance
    Side view of a Caucasian female director and a multi-ethnic group of teenage male and female choristers standing opposite each other holding sheet music and singing on the stage of a school theatre during rehearsals for a performance — Stock Photo
    Side view of a Caucasian female director and a multi-ethnic group of teenage male and female choristers standing opposite each other holding sheet music and singing on the stage of a school theatre during rehearsals for a performance
    Rear view of a Caucasian woman conductor directing a multi-ethnic group of teenage male and female choristers holding sheet music and singing standing on the stage of a school theatre during rehearsals for a performance — Stock Photo
    Rear view of a Caucasian woman conductor directing a multi-ethnic group of teenage male and female choristers holding sheet music and singing standing on the stage of a school theatre during rehearsals for a performance
    Orchestra conductor looking at empty seats — Stock Photo
    Orchestra conductor looking at empty seats
    Curious kids conducting science experiment — Stock Photo
    Curious kids conducting science experiment
    Teacher and students conducting scientific experiment — Stock Photo
    Teacher and students conducting scientific experiment
    College students conducting scientific experiment in science laboratory classroom — Stock Photo
    College students conducting scientific experiment in science laboratory classroom
    College students conducting scientific experiment in science laboratory classroom — Stock Photo
    College students conducting scientific experiment in science laboratory classroom
    Male college student conducting scientific experiment in science laboratory classroom — Stock Photo
    Male college student conducting scientific experiment in science laboratory classroom
    College students conducting scientific experiment in science laboratory classroom — Stock Photo
    College students conducting scientific experiment in science laboratory classroom
    College students conducting scientific experiment in science laboratory classroom — Stock Photo
    College students conducting scientific experiment in science laboratory classroom
    College students conducting scientific experiment in science laboratory classroom — Stock Photo
    College students conducting scientific experiment in science laboratory classroom
    Science professor helping college student conducting scientific experiment in science laboratory classroom — Stock Photo
    Science professor helping college student conducting scientific experiment in science laboratory classroom
    College students conducting scientific experiment at microscope in science laboratory classroom — Stock Photo
    College students conducting scientific experiment at microscope in science laboratory classroom
    Male college student conducting scientific experiment using pipette in science laboratory classroom — Stock Photo
    Male college student conducting scientific experiment using pipette in science laboratory classroom
    Scientist in clean suit conducting scientific experiment in laboratory — Stock Photo
    Scientist in clean suit conducting scientific experiment in laboratory
    College students using microscope conducting scientific experiment in laboratory — Stock Photo
    College students using microscope conducting scientific experiment in laboratory
    College students conducting scientific experiment in science laboratory classroom — Stock Photo
    College students conducting scientific experiment in science laboratory classroom
    College students conducting scientific experiment in science laboratory classroom — Stock Photo
    College students conducting scientific experiment in science laboratory classroom
    Female college students conducting scientific experiment in science laboratory classroom — Stock Photo
    Female college students conducting scientific experiment in science laboratory classroom
    Senior patient undergoing heart ultrasound scanning by female doctor. — Stock Photo
    Senior patient undergoing heart ultrasound scanning by female doctor.
    Senior patient undergoing heart ultrasound scanning by female doctor. — Stock Photo
    Senior patient undergoing heart ultrasound scanning by female doctor.
    Conductive vessel element in mountain mahogany wood (Cercocarpus sp), coloured scanning electron micrograph (SEM). — Stock Photo
    Conductive vessel element in mountain mahogany wood (Cercocarpus sp), coloured scanning electron micrograph (SEM).