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The following HTML text is provided to enhance online readability. Many aspects of typography translate only awkwardly to HTML. Please use the page image as the authoritative form to ensure accuracy. Problems in preventing plant disease epidemics. Am. J. Bot. 44: 259-67 . With J. G. Harrar. Principles of Plant Pathology . New York: The Ronald Press. 581 pp . 1959 The role of plant pathology in the scientific and social development of the world. In Plant Pathology, Problems and Progress 1908-58 . Madison: University Wisconsin Press, pp. 3-13 . Progress and problems in the development of disease-resistant varieties of crop plants. In Proceedings of the Fifth International Congress on Crop Protection 1957 , pp. 4-15 . Trends and needs in agricultural education and research. In Proceedings of the American Association of Land-Grant Colleges and State Universities , Washington, D.C. 1958, pp. 61-75 . 1960 The problem of breeding resistant varieties. In Plant Pathology , vol. 3 , The Diseased Population, Epidemics and Control , pp. 567-624 . New York: Academic Press. La obligacion de la fitopatologia en el problema de la alimentacion humana. Memoria Segundo Congreso Nacional de Entomologia y Fitopatologia, Escuela Nacional de Agricultura, Chapingo, Mexico. Pp. 479-501 . 1964 Science, Sense and Society . Washington, D.C.: Cosmos Club. 22 pp . 1966 Pest, pathogen, and weed control for increased food production. Proc. Natl. Acad. Sci. USA 56:376-81 . 1967 With R. Bradfield and P. C. Mangelsdorf. Campaigns against hunger. Cambridge: Harvard University Press. 328 pp . 1968 What are the prospects for permanent control of the cereal rusts? In the Proceedings of the International Cereal Rusts Conference , Oeiras, Portugal, August 1968.
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