Author :
United States. Dept. of Agriculture
Title :
Contours of change
Publication :
For sale by the Supt. of Docs
Collation :
xi, 366 p. illus. 24 cm
Series :
Its Yearbook of agriculture, 1970
Subject :
Agriculture- United States
ADDED ENTRIES :
Series:Yearbook of agriculture (Washington, D.C. : 1926) ; 1970
