TY - GEN A2 - United States. Bureau of the Census. Agriculture Division AU - United States. Bureau of the Census. Geography Division, cartographer. CN - C 3.62/4:32 CY - Washington, D.C. CY - Washington, D.C. LA - English PB - [: Bureau of the Census, For sale by the Superintendent of Documents, U.S. Government Printing Office] PP - Washington, D.C. PP - Washington, D.C. PY - 1970 TI - Percent change in the value of farm products sold per acre of land in farms : by counties of the United States, 1939-1964 ER -