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8. Agronomic aspects of cotton mechanization, address by A. H. Moseman, chief, Bureau of Plant Industry, Soils, and Agricultural Engineering, Agricultural Research Administration, Department of Agriculture, at 5th beltwide cotton mechanization conference at Chickasha, Okla., Nov. 8, 1951.

10. Recent research on use of agricultural chemicals, address by Robert M. Salter, chief, Bureau of Plant Industry, Soils, and Agricultural Engineering. Agricultural Research Administration, at 18th semi-annual meeting of National Agricultural Chemicals Association, Miami Beach, Fla., Apr. 4, 1951.