Ключевые слова: background, bible, black, book, button, college, diary, dictionary, digital, education, encyclopedia, graphic, green, icon, illustration, information, knowledge, learning, library, literature, magazine, mark, notebook, novel, open, page, pages, paper, pictogram, popart, publication, publish, publishing, read, reader, reading, regular, school, sign, silhouette, spot, study, studying, symbol, text, textbook, university, white,