Búsqueda: "conocimientos" total 1325 imágenes imágenes/página

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Senior chemistry professor giving a lecture in front of classroom full of students (shallow DOF; color toned image)
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Pretty, young woman celebrating joyfully her graduation - spreading wide her arms, holding her diploma, savouring her success (color toned image; shallow DOF)
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Teenager boy wearing jeans and shirt and reading book
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Young woman in shirt holding book above head
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Woman in casual wear hiding her face behind book
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Woman in casual wear holding opened book in hands. Elements of this image are furnished by NASA
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Teenager boy wearing jeans and shirt and reading book
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Pretty young college student in a library (shallow DOF; color toned image)
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Unhappy teenage girl studying at the desk
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Young man in casual holding opened book with green tree
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Young man in casual holding opened book with windmills
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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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Kid student girl against school blackboard having good idea
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Kid student girl against school blackboard having good idea
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Pretty young college student in a library (shallow DOF; color toned image)
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Pretty, young college student looking for a book in the library, studying for her exam
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Pretty, young college student looking for a book in the library, studying for her exam
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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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Handsome college student solving a math problem during math class in front of the blackboard/chalkboard (color toned image)
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Pretty, young college student writing on the chalkboard/blackboard during a math class (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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Portrait of a pretty young college student writing on the blackboard during a maths class (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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Portrait of a pretty young college student writing on the blackboard during a maths class (color toned image)
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Two female college students working on a laptop computer during class (color toned image)
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Pretty, young college student writing on the chalkboard/blackboard during a math class (colort toned image; shallow DOF)
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Pretty, young college student writing on the chalkboard/blackboard during a math class (colort toned image; shallow DOF)
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in the library - pretty female student with laptop and books working in a high school library (color toned image)
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in the library - pretty female student with laptop and books working in a high school library (color toned image)
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Blackboard/chalkboard during math class in front of the(color toned image)
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group of students study with professor in modern school classroom
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group of students study with professor in modern school classroom
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College/university campus - Pretty young female student in library looking for a book (color toned image; shallow DOF)
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Pretty, female college student in a library, looking for a book (shallow DOF; color toned image)
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Pretty, young female college student using a desktop computer/pc in a college library - burning the midnight oil, working hard toward her goals instead of getting enough sleep (shallow DOF; color toned image)
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Blackboard with math lesson written on it
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Boy in library with books
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Boy in library with books
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