16 periodicals, manuals, and instructional and teaching materials; namely, user guides, workbooks, training manuals, technical drawings, newsletters and magazines, all in the field of solution concepts concerning production planning and control, data collection, costing, purchase and inventory, order processing, invoicing, accounts receivable, accounts payable, financial management, project management, fixed assets and personnel management, sales and marketing, client recording, time recording, budgeting, and Application Control System (ACS)