Vols.1 and 2 of course M23P form vols.1 and 3 of course M23M.
Vol.1 (1978 printing); vol.4. c1979.
Vol.3 has joint author Eileen Aldworth.
M23P pure mathematics 'A' Level : a course leading to the University of London G.C.E. 'A' Level examination in pure mathematics (subject 405) by Graham Smithers. ISBN 0902404830. Published by National Extension College in 1977. Publication and catalogue information, links to buy online and reader comments.