Proceedins of the Fifth GAMM Conference on Numerical Methods in Fluid Mechanics. Edited by M. P ANDOLFI and R. P IVA . Vieweg (Wiesbaden), 1984. 390 pp. DM78.00. Cavitation. Mech. Engng Publ. Ltd (Bury St Edmunds), 1983. 298 pp. £38.00 (£49.50 overseas), paperback. Foundations of the Probabilistic Mechanics of Discrete Media. By D. R. A XELRAD . Pergamon, 1984. 166 pp. £15.00. Atmospheric Dispersion in Heavy Gases and Small Particles. Edited by G. O OMS and H. T ENNEKES . Springer, 1984. 440 pp. DM98.00. Gas Transfer at Water Surface. Edited by W. B RUTSAERT and G. H. J IRKA . Reidel, 1984. 639 pp. Dfl 210.00/$78.00.