16 Ink ribbons and ink ribbon cassettes for computer printers, word processors, facsimile machines and copy machines; printed matter, namely books, magazines, newspaper, manuals, catalogs and pamphlets, all in the field of computer related matters; printing paper, copy paper, typewriter paper, writing paper, computer paper, labels; stationery; electric and manual typewriters; office check writing machines and paper shredders for office use; printed instructional and teaching materials in the field of mathematics; and parts for the aforesaid goods