Ключевые слова: administrative, antique, archive, book, catalog, data, depository, document, education, educational, file, folder, group, heap, keep, key, knowledge, learn, library, literature, lock, metal, old, order, organization, padlock, paper, paperwork, pile, private, protect, protection, read, register, reliable, research, safety, security, shelf, stack, steel, storage, studying, symbol, textbook, vintage, wisdom,