Book publishing; Publication of texts, books, magazines and other printed matter; Publishing books in the field of data science, computing, and information technology

Recording and storage media, namely cartridges, cassettes and discs containing magnetic recording material; data storage and processing media, namely blank and formatted computer floppy discs, computer tapes, computer tape cartridges and computer tape reels, computer disc drives, and re-writable optical discs; magnetic powders and magnetic liquids, being magnetic materials for storing information; computer software for use in data storage; and semiconductor chips and substrates