Methods of studying plant water relations: Vol. 9 of J. Jacobs, O.L. Lange, J.S. Olson and W. Wieser (Editors), Ecological Studies. Analysis and Synthesis. B. Slavik. Academia, Publishing House of the Czechoslovak Academy of Sciences, Prague and Springer-Verlag, Berlin, Heidelberg, New York, N.Y., 1974, 460 pp., 181 figures, 28 tables, DM 76.00, US $31.10