忙しい思慮深い顔本を読んで、背景に本棚の男。教育および科学のコンセプトです。先生やひげは図書館で勉強している学生です。科学者の本の探索で忙しい. - ストックフォト＆画像

Portrait of man with beard and good eyes reading book in hand on bookshelf background. Education and science concept. Scientist busy with reading book. Teacher, student with beard studying in library.

Man on busy thoughtful face reading book, bookshelves on background. Teacher or student with beard studying in library. Scientist busy with exploring book. Education and science concept.

Bookworm concept. Teacher or student with beard sit at table with hourglass and glasses, defocused. Man on strict face sit between piles of books, while studying in library, bookshelves on background.

Man on thoughtful face holds hourglass while studying, bookshelves on background. Teacher or student with beard studying in library. Man, scientist in glasses looks at hourglass. Time flow concept.

Portrait of man with beard and good eyes reading book in hand on bookshelf background. Education and science concept. Scientist busy with reading book. Teacher, student with beard studying in library.

Business man sitting at the office and thinking about what to write

Deadline concept. Teacher or student with beard sits at table with glasses, defocused. Man on shocked face between piles of books, while studying in library, bookshelves on background.

Man on calm face between piles of books, while studying in library, bookshelves on background. Bibliophile concept. Teacher or student with beard sits at table with books, defocused.

Man on happy face between piles of books in library, bookshelves on background. Teacher or student with beard wears eyeglasses, sits at table with books, defocused. Scientific research concept.

Deadline concept. Teacher or student with beard sits at table making roof out of book, defocused. Man on shocked face between piles of books, while studying in library, bookshelves on background.

Man on concentrated face reading book, studying, bookshelves on background. Self education concept. Teacher or student with beard studying in library. Man sits at table with mug and hourglass.

Man on strict face sit between piles of books, while studying in library, bookshelves on background. Bookworm concept. Teacher or student with beard sit at table with hourglass and glasses, defocused.

Teacher or student with beard sit at table with hourglass and glasses, defocused. Bookworm concept. Man on strict face sit between piles of books, while studying in library, bookshelves on background.

Bearded man, long beard, brutal caucasian hipster with moustache holding notepad with sad face isolated on white background

Teacher or student with beard sits at table with books, defocused. Man on serious face between piles of books, while studying in library, bookshelves on background. Bibliophile concept.

Librarian concept. Man on thoughtful face stands between piles of books, while holds hourglass, bookshelves on background. Teacher, scientist with beard stands at table with books, defocused.