Page 85 in Extension Circular 532, Review of Extension Research, January through December 1959, U.S. Department of Agriculture, Washington, D.C. Brief description of an update of a document of the same title, Journal Series 2047, Missouri Agricultural Experiment Station, University of Missouri, Columbia. 1959. 20 pages.
Pages 82-83 in Review of Extension Research, January through December 1957. Brief description of a study to be conducted by the Publications Needs Study Committee, U.S. Department of Agriculture, Washington, D.C.
