16 Printed matter, namely, periodicals, magazines in the nature of periodicals, pamphlets, prospectuses, printed matter in the nature of guides, booklets, manuals, and leaflets in the field of health care and medical research, paper instructional and teaching material not including apparatus in the field of health care and medical research, almanacs, scrapbooks, calendars, pens, pencils, postcards, graphic representations, graphic art reproductions, handouts in the field of health care and medical research, photographs; magazines, periodicals and other printed matter in the nature of worksheets, pamphlets, printed forms, blank journal books, prospectuses, booklets, manuals, leaflets, guides, and posters in the field of health; posters, printed forms, blank journal books