In the library - pretty, female student with books, papers and laptop computer working in a high school library (color toned image)
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Blackboard with math lesson written on it
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In the library - pretty, female student with books, papers and laptop computer working in a high school library (color toned image)
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In the library - pretty, female student with books, papers and laptop computer working in a high school library (color toned image)
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In the library - pretty, female student with books, papers and laptop computer working in a high school library (color toned image)
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In the library - pretty, female student with books, papers and laptop computer working in a high school library (color toned image)
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Two young female researchers carrying out experiments in a lab (shallow DOF; color toned image)
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Portrait of a pretty young college student writing on the blackboard during a maths class (color toned image)
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science chemistry classes with young student woman in labaratory
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Handsome college student sitting in a classroom full of students during class  (color toned image; shallow DOF)
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Senior chemistry professor writing on the board while having a chalk and blackboard lecture (shallow DOF; color toned image)
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happy young boy at first grade math classes solving problems and finding solutions
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happy child  group in schoold have fun and learning leassos while looking for solutions and problems and rise a hand
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happy children group  in school classrom taking notes and learning biology and anatomy lessons with teacher
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happy school girl on math classes finding solution and solving problems
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Group of college/university students during a brake between classes - chatting, comparing notes, having fun (shallow DOF; color toned image)
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group of arab teens taking selfie photo on smart phone with black chalkboard in background
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arab teenagers group using smart phones for social media networking against black chalkboard
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Portrait of a pretty young college student writing on the blackboard during a maths class (color toned image)
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Arabic teenagers, students group  portrait against black chalkboard wearing backpack and books in school
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College students sitting in a classroom during class (shallow DOF; color toned image)
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Image of businessman examining objects with magnifier
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Male researcher carrying out research in a chemistry lab (color toned image; shallow DOF)
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Image of businessman examining objects with magnifier
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Image of businessman examining objects with magnifier
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Pretty, female student looking at a desktop computer screen, learning unpleasant news about her exam results. University/office/school concept
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Pretty, female student looking at a desktop computer screen, learning unpleasant news about her exam results. University/office/school concept
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Pretty, female college student in a library, looking for a book (shallow DOF; color toned image)
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Two young researchers carrying out experiments in a lab (shallow DOF; color toned image)
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Young man holding huge book above head
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Young man holding huge book above head
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Pretty young college student in a library (shallow DOF; color toned image)
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happy young teens group in school have fun an learning lessons
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book symbol on gray background
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Portrait of a female researcher doing research in a lab (shallow DOF; color toned image)
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Cute girl with microscope against blackboard. Elements of this image are furnished by NASA
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Cute school boy examining objects with magnifying glass
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Young man with opened book. Reading and education
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Successful study symbol on white background
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Math teacher by the blackboard during mathclass - detail of the hand with chalk
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