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pen, writing, notes, school, class, diary, exam, homework

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photo of class, university, lecture, campus, education, people, seminar, study

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magazine, outdoors, Woman reading, woman, hands, reading, lecture, people

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magazine, outdoors, Woman reading, woman, hands, reading, lecture, people

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chair, desk, inside, room, classroom, school, education, learning

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man, wearing, notched, lapel suit jacket, standing, front, camera, conference

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school classroom, education, learning, School, classroom, various, study, seminar

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school classroom, tables, chairs, School, classroom, various, college, education

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white, screen projector classroom, classroom, school, education, learning, lecture, university

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top, view, high, school students, sitting, lecture theater, -, editorial use

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professional, man, presentation, data., data, information, analysis, big data

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school classroom, School, classroom, various, college, education, learning, lecture

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apple, laptop, notebook, working, class, conference, homework, intern

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seo, professional, presentation., search engine optimization, marketing, strategy, digital, analytics

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closeup, photography, black, microphone, it, lecture, entry, sound

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person, writing, paper, using, yellow, black, pen, check

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people, watching, presentation, room, People watching, display, chairs, study

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brown, wooden, framed, chalkboard, school, board, empty, slate

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brown, black, wooden, chairs, inside, room, auditorium, benches

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white, wooden, rectangular, table, architecture, auditorium, building, business

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scientific calculator, calculate, calculator, class, homework, learning, lecture, mathematics

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man, raising, right hand, adult, blur, businessman, career, chair

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photo illustration, taking, video, person, speaking, public., video recording, conference

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people, sitting, chair, lecture, lecturer, man, profession, work

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building, desk, school, table, architecture, chairs, classroom, desks

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bored, teenage, school girl, sleeps, class, -, editorial use, school kid

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group, people, meeting, lectures, professor, entrepreneurship, cafe, group of people

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man, white, dress shirt, lecture, presentation, event, people, men

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scientific calculator, calculate, calculator, class, learning, lecture, mathematics, school

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board room, chairs, conference room, floor, indoors, meeting, office, projector

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person, sitting, open, book, black-and-white, dark, fiction, hands

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man, wearing, black, suit jacket, birger kollmeier, professor, blackboard, physics

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man, wearing, dress shirt, holding, microphone, the conference, lecture, lecture hall

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group, people, listening, convention, group of people, stadium, the audience, the public lecture

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brown lectern, classroom, lecture hall, college, education, university, school, seat

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room chair lot, audience, auditorium, chairs, classroom, education, empty, furniture

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interior, abandoned, building, auditorium, chairs, class, classroom, clean

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group, people, sitting, chair, listening, person, front, seminar

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group, people gathering, activity event, group of people, activity, event, meeting business, conference

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gray bleachers, room, lecture hall, assembly hall, audience, lectures, school, university

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blue theater chairs, auditorium, classroom, lecture, education, empty, theater seating, audience

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man, taking, teaching, online, course, internet, call, headset

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brown, wooden, armchair lot, classroom, school, education, learning, lecture hall

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people, meeting, colleagues, seminar, presentation, business, office, lecture

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classroom chair, desk, chairs, classroom, college, desks, empty, indoors

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dry, erase, board, front, table, whiteboard, classroom, lecture hall

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woman, holding, microphone, standing, front, crowd, chairs, class

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communication, connection, diary, diary notebook, digital device, expression, handwriting, happy

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selective, focus photo, person, black, collared, top, event, dialogue

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lecture, instructor, classroom, room, this special steel company, teacher, education, seminar

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