Book 1. Number systems, edited by: R. C. Adams.- Book 2. Functions and graphs, edited by: D. W. Lemasurier and G. J. Townsend.- Book 3. Sets, Concepts and relations, edited by P. A. Armstrong.- Book 4. Calculus, edited by D. J. G. James.- Book 5. Conversing with a computer, by P. J. Hartley and D. S. Mason