Progress in Pesticide Biochemistry and Toxicology, Volume 4. Edited by D. H. Hutson and T. R. Roberts. (Chichester: Wiley, 1985.) [Pp. 355 + 13.] Price £42.00. The Biochemical Effects of Drugs in Pregnancy—Volume 1. Drugs Active in the Nervous, Cardiovascular and Haemapoietic Systems. By A. Onnis and P. Grella. (Chichester: Ellis Horwood, 1984.) [Pp. 387+9.] Price £45.00. The Biochemical Effects of Drugs in Pregnancy—Volume 2. Diuretics, Digestive and Pulmonary Tract Drugs, Hormones, Antihormones, and Steroid Hormones; Analgesics, Metabolic Action Drugs, Antibiotics and Chemotherapeutic Substances, Vaccines and Sera. By A. Onnis and P. Grella. (Chichester: Ellis Horwood, 1984.) [Pp. 486 + 7.] Price £45.00. Handbook of Enzyme Biotechnology, Second edition. By Alan Wiseman. (Chichester: Ellis Horwood, 1985.) [Pp. 437 + 20] Price £42.50.