16 Paper; cardboard; printed matter, namely, paper signs, books, manuals, business cards, newsletters, informational cards, posters, brochures, letters, certificates in the field of biotherapeutics; bookbinding material; photographs; stationery; printed instructional, educational, and teaching materials in the field of medicine; publications, namely, books, hand-outs, workbooks, posters, research articles in the fields of science, medicine and biotherapeutics; publications for the medical profession, namely, magazines, newsletters, research articles in the field of medicine