Ключевые слова: 3d, a4, background, black, blank, book, booklet, catalog, close, closed, content, cover, design, desk, document, ebook, encyclopedia, front, handbook, hardback, isolated, journal, layout, literature, magazine, manual, mock, mockup, notebook, novel, object, open, page, paper, paperback, plan, print, shadow, shape, space, standing, studying, table, template, textbook, tome, tutorial, up, wisdom,