Marine geology of the Gulf of California : Tj. H. van Andel and G. G. Shor Jr. (editors). American Association of Petroleum Geologists, Tulsa, Okla., memoir 3, 1964, 408 pp., 228 illus., 52 tables, 1 separate cover with 6 charts, $ 12.50

That an investigation of a certain area made by one or a few scientists can never result in a complete paper is clearly demonstrated by this magnificent book. The combined program for study of the Gulf of California by all available methods, such as geology, oceanography, marine geology, geophysics and ecology makes this report highly interesting and useful (17 articles, 27 authors). This book cannot only be called a very complete marine geological (s.1.) description of a certain area of our planet, but it does clearly stipulate the need and advantage of co-operation