135 pages, 3 pages of plates : illustrations, maps (1 folded color in pocket) ; 24 cm
OCLC
ocm07956622
Cover title.
Issued by the United States Department of Agriculture, Agricultural Research Administration, Bureau of Plant Industry, Soils, and Agricultural Engineering, in cooperation with the Tennessee Agricultural Experiment Station and the Tennessee Valley Authority.
"Issued February 1946."--P.1.
Includes bibliographical references (pages 134-135).