16 paper articles, cardboard articles and printed matter, namely, magazines, journals and newsletters in the field of gemology, books in the field of gemology, instructional and teaching materials in the field of gemology, reference materials, namely, manuals, handbooks, printed charts and printed tables, all in the field of gemology, testing materials, namely, test booklets, score sheets and answer sheets, unmounted photographs, stationery, note paper, printed diplomas, posters, gemological grading reports and cardboard