Ключевые слова: abstract, background, blue, book, card, college, concept, copyright, cover, creative, day, design, education, holiday, information, international, knowledge, learn, learning, lettering, library, literacy, literary, literature, paper, poster, publishing, read, reading, school, stack, story, student, study, studying, symbol, teacher, text, textbook, trendy, university, world, world book day,