The encyclopedia of chemical technology (Kirk‐Othmer), Vols 9, 10 and 11. Edited by Jacqueline I. Kroschintz, John Wiley & Sons, Ltd., Chichester, 1994, xxviii + 1112 pp., xxviii + 1012 pp., xxvii + 1121 pp., price UK £185.00 per volume. ISBN 0 471 52677 0,O 471 52678 0,O 471 52680 0