Ключевые слова: blur, book, books, bookstore, closeup, college, degree, education, educational, german, glass, hardcovers, homework, information, inspecting, investigating, isolated, knowledge, languages, learning, libraries, library, linguistics, looking, loop, magnifying, major, minor, pencil, pile, reading, research, school, searching, seeking, speech, stack, stacked, studies, study, subject, textbooks, texts, tool, university, viewing,