TY  - BOOK
AU  - Hopfen,Hans Joachim
TI  - Farm implements for arid and tropical regions
U1  - 631.3 HOP 
PY  - 1969///
CY  - Rome : 
PB  - Food and Agriculture Organization of the United Nations , 
KW  - Agricultural implements
N1  -  Includes bibliography [147]-150
ER  -