Ключевые слова: 3d, background, book, bookstore, collection, color, colorful, design, dictionary, document, education, element, encyclopedia, flat, green, icon, illustration, information, isolated, knowledge, learning, library, literature, magazine, novel, open, orange, page, paper, pictogram, publish, publishing, read, reading, render, rendering, school, shape, sign, silhouette, simple, study, studying, symbol, text, textbook, university, web, yellow,