Formulaire des Conduits Forcées Oléoducs et Conduits d'Aération. By L. L EVIN . (In French.) Dunod, 1968. 224 pp. 74.05 francs. Tranzitia de la Scurgerea Laminara la cea Turbulenta. By St N. S AVULESU . (In Rumanian.) Editura Acad. Rep. Soc. Romania, 1968. 312 pp. Similitude: Theory and Applications. By V ICTOR S KOGLUND . International Textbook Co., 1967. 340 pp. $13.75. Proceedings of the 1967 Heat Transfer and Fluid Mechacics Institute. Edited by P AUL A. L IBBY , D ANIEL B. O LEE and C HARLES W. V AN A TTA . Stanford University Press, 1967. 486 pp. £5. 14 s . The Structure and Properties of Liquids. Butterworths, 1967. 248 pp. £4. 10 s . Advances in Molecular Relaxation Processes. Edited by W. J. Orville-Thomas and J. Meixner. Elsevier. Vol. 1, 1967-68. Subscription per volume of four parts. £10. 9 s . 6 d . or $25.00. Applied Hydrodyanimics, 2nd edition. By H. R. V ALLENTINE . Butterworthw, 1967. 296 pp. £2. 10 s . Basic Engineering Thermodynamics. By F. J. W ALLIACE and W. A. L INNING . Pitma, 1968. 486 pp. £2. 10 s . Advances in Applied Mechanics , volume 10, fascicle 1. Academic Press, 1967. 112 pp. $4.75.