16 Paper, cardboard, and goods made from these materials, namely, document files, folders and document folders in the form of wallets, file index dividers, file subject dividers, hanging folders suspension files, presentation and display albums, folders and binders; printed matter, namely, magazines, periodicals, journals and books featuring materials science, minerals and mining; book binding material; photographs, stationery; adhesive for stationery or household purposes; office requisites, namely, document files, folders and document folders in the form of wallets, file index dividers and subject dividers, hanging folders, file boxes for storage of business and personal records, paper expanding files, ring binders, lever arch binders, presentation and display albums, binders and file pockets, document, letter and magazine trays and racks, desktop business card holders and books for business cards, pen holders, dry erase whiteboards, chalk boards, staplers and hole punches; printed instructional and teaching materials in the field of materials science, minerals and mining; plastic materials, namely, plastic bags and plastic bubble packs for packaging