Book reviewed in this article:GeneralFeaturesof the PaleobiologicalEvolutionof Cetacea, Guram Andreevich Mchedlidze.How TO WRITE and PUBLISH A SCIENTIFIC PAPER. R. A. Day.Reproductionin Whales, Dolphins, and Porpoises. W. F. Perrin, R. L. Brownell, Jr., and D. P. DeMaster (Eds.).Communicationand Behaviorof Whales. R. Payne (Ed.).Echolocationin Whalesand Dolphins. P. E. Purves and G. E. Pilleri.