16 Printed matter for educational purposes; Educational materials in written form; Printed matter for instructional purposes; Computer software operating manuals; Instruction manuals relating to computer software; Printed publications relating to computer software; Periodic printed publications; Discussion notes, in the nature of books, pamphlets, brochures; Documentation , in the nature of books, pamphlets, brochures; Guides , in the nature of books, pamphlets, brochures; Instruction manuals , in the nature of books, pamphlets, brochures; Manuals , in the nature of books, pamphlets, brochures; Printed manuals; Educational materials in printed form; Audio visual printed presentational materials; Audio visual teaching materials , in the nature of books, pamphlets, brochures; Materials for instructing , in the nature of books, pamphlets, brochures; Periodically distributed printed materials; Printed course materials; Printed material; Modelling materials for educational purposes; Educational materials for use in teaching; Teaching materials for education; Printed training guides; Booklets for use in conducting training workshops; Training booklets; Training guides in the form of printed matter; Training manuals in the form of printed matter; Training materials , in the nature of books, pamphlets, brochures; Booklets for use in conducting seminars; Instruction manuals relating to training seminars; Instruction guides; Newsletters, in the nature of books, pamphlets, brochures; Newsletters; Printed materials for audio visual presentation