Theories of Fluids with Microstructure . By V. K. S TOKES . Springer, 1984. 209 pp. DM 88.00. Remote Sensing of Shelf Sea Hydrodynamics . Edited by J. C. J. N IHOUL . Elsevier, 1984. 354 pp. $69.25. Random Walks in Biology . By H. C. B ERG . Princeton University Press, 1983. 142 pp. £14.30. The Science and Technology of Coal and Coal Utilization . Edited by B. R. C OOPER and W. A. E LLINGSON . Plenum, 1984. 666 pp. $85.00. Ocean Hydrodynamics of the Japan and East China Seas . Edited by T. I CHIYE . Elsevier, 1984. 423 pp. $71.25. Nonlinear Partial Differential Equations in Applied Science: Proceedings of the U.S.-Japan Seminar . Edited by H. F UJITA , P. D. L AX and G. S TRONG . North Holland, 1983. 457 pp. $60.00 (paperback).