TY  - GEN
AU  - Hoppen, H J
TI  - Farm implements for arid and tropical regions
T2  - FAO agricultural series no.13
SN  - 92-5-101527-9
U1  - 631.3 HOP 
CY  - Rome, FAO of the UN
KW  - Farm equipments/plant protection machines harvesting tools
ER  -