16 INSTRUCTIONAL AND TEACHING MATERIAL, NAMELY, BOOKS FOR TEACHING MATHEMATICS, SCIENCES, PHYSICS, CHEMISTRY, BIOLOGY, SOCIAL SCIENCES, GEOGRAPHY, FOREIGN LANGUAGES, HISTORY, ART, MUSIC, SPORTS, COMPUTING, PHILOSOPHY, RELIGION, EDUCATIONAL ACTIVITY BOOKS, EXERCISES BOOKS, BOOKS FOR LEARNING TO READ, EDUCATIONAL ACTIVITY CARDS; STATIONERY, NAMELY, EXERCISE BOOKS, FOLIOS FOR LOOSE-LEAF PAPER, GRADE BOOKS, AGENDAS, WRITING EXERCISE BOOKS, MATHEMATICS EXERCISE BOOKS, SCIENCE EXERCISE BOOKS, PHYSICS EXERCISE BOOKS, CHEMISTRY EXERCISE BOOKS, BIOLOGY NOTEBOOKS, SOCIAL SCIENCE EXERCISE BOOKS, GEOGRAPHY EXERCISE BOOKS, FOREIGN LANGUAGES EXERCISE BOOKS, HISTORY EXERCISE BOOKS, ART EXERCISE BOOKS, MUSIC EXERCISE BOOKS, SPORTS EXERCISE BOOKS, COMPUTING EXERCISE BOOKS, PHILOSOPHY EXERCISE BOOKS, RELIGION EXERCISE BOOKS, NOTEBOOKS, NOTEPADS, WRITING PADS, ALL WITH THE EXCLUSION OF MAGAZINES