16 Printed matter, namely, paper signs, books, manuals, curricula, newsletters, informational cards and brochures all relating to economic, arts, social and political issues; bookbinding materials; printed photographs; stationery; adhesives for stationery or household purposes; paint brushes; typewriters; office stationery; printed instructional and teaching material, except apparatus, all relating to economic, social and political issues; plastic film for packaging; brochures all relating to economic, arts, social and political issues; newspapers; printed publications, namely, magazines, books, hand-outs, manuals, research reports, brochures, informational cards and workbooks all relating to economic, arts, social and political issues; research reports relating to economic, social and political issues