by Herbert Sinnecker. Translated from the German by N. Walker. 228 pages, illustrated. John Wiley & Sons, London, New York, Sydney, Toronto. 1976. No price
by H. Harford Williams and Arlene Jones. 47 pages, illustrated. Commonwealth Institute of Helminthology, Commonwealth Agricultural Bureaux, Central Sales Branch, Farnham Royal, Slough SL2 3BN, England. 1976. £3.00
edited by A. E. R. Taylor and R. Muller. Symposia of the British Society for Parasitology, Volume 15. vii + 155 pages, illustrated. Published by Blackwell Scientific Publications; available from J. B. Lippincott Co., East Washington Square, Philadelphia, Pennsylvania 19105. 1977. $13.00
