Ключевые слова: 30s, academic, adult education, attentively, book, bookshelf, campus, caucasian, college, college student, concentrated, concentrating, education, female, floor, focused, higher education, holding, indoors, knowledge, library, literature, mature student, mid adult, pile, reading, school, serious, sitting, stack, student, studying revising, thoughtful, university, university student, woman,