Genetics and Plant Pathogenesis. P. R. Day and G. J. Jellis, Eds. Blackwell Scientific, Palo Alto, CA, 1987. x, 352 pp., illus. $50. From a meeting, Egham, U.K., Dec. 1985; Populations of Plant Pathogens. Their Dynamics and Genetics. M. S. Wolfe and C. E. Caten, Eds. Blackwell Scientific, Palo Alto, CA, 1987. viii, 280 pp., illus. $80. From a meeting, Leeds, U.K., Dec. 1983.
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