U. S. Dept. of Agriculture (P.M.A., Cotton Branch), Regulations Governing Cotton Fiber and Spinning Tests Under the Act of April 7, 1941.
4.
U. S. Dept. of Agriculture, Developments in Cotton Standardization and Related Activities, Service and Regulatory Announcements No. 163, Aug. 1942, 26 pp.
5.
U. S. Dept. of Agriculture, Further Developments in Cotton Standardization and Related Activities, Service and Regulatory Announcements No. 165 (P.M.A.), Nov. 1947, 35 pp.
6.
U. S. Dept. of Agriculture (P.M.A., Cotton Branch), Cotton Testing Service, Oct. 1949, pp. 1-29 (processed).