Oil on Troubled Waters. A Bibliography on the Effects of Surface-Active Films on Surface-Wave Motions. By J OHN C. S COTT . Multi-science publishing, London, 1979. 83 pp. £10.00. Erythrocyte Mechanics and Blood Flow , Edited by G ILES R. C OKELET , H ERBERT J. M EISELMAN and D ONALD E. B ROOKS . Kroc Foundation Series, Volume 13. Alan R. Liss Inc., New York, 1979. 285 pp. $30.00. Urodynamics. by D. J. G RIFFITHS . Medical Physics Handbooks 4. Adam Hilger Ltd., Bristol, 1979. 139 pp. £11.95 (hard-back). Mechanics of Sound Generation in Flows. Edited by E. A. M ÜLLER . Springer 1979. 300 pp. DM. 68. Cavitation and Inhomogeneities in Underwater Acoustics. Edited by W. L AUTERBORN . Proceedings of the 1st International Conference, Göttingen FRG, 9–11 July 1979. Springer Series in Electrophysics, volume 4. Springer, 1980. DM 62.