TY  - BOOK
AU  - United State Department of Agriculture 
TI  - Contours of change 
SN  - 91254
AV  - S21 .A35 U5 1970 2291
PY  - 1970///
CY  - USA
PB  - The Government press USA
KW  - The year book for agriculture
N1  - Includes index
ER  -