TY  - BOOK
AU  - Helgeson,Earl A.
ED  - Food and Agriculture Organization of the United Nations (Rome) ,
TI  - Methods of weed control
U1  - 630.82 
PY  - 1957///
CY  - Rome
PB  - FAO
KW  - Weed control
KW  - Weeds
KW  - Equipment and supplies
ER  -