TY  - BOOK
AU  - Stefferud,Alfred
ED  - United States.
TI  - Power to produce
T2  - Its Yearbook of agriculture, 1960. 
AV  - S21 .A35 1960
PY  - 1960///
CY  - Washington
PB  - U.S. Govt. Print. Off.
KW  - Power (Mechanics)
KW  - Farm mechanization
KW  - Agricultural implements
KW  - Agricultural machinery
ER  -