9 Electrical and Electronic Apparatus and Instruments-Namely, Calculators and Peripheral and Terminal Computer Instruments
16 Periodicals Relating to Computers and Information Services-Namely, Books and Pamphlets
35 Business Services for Others Utilizing Computers-Namely, Information Storage and Retrieval Services, and Mathematical and Statistical Data Compilation
42 Providing Computer Programming Services for Others, Documentary Research Services and Engineering Consulting Services in the Field of Automated Information and Storage Retrieval Systems, and Data Base Management