TY  - BOOK
AU  - Roberts,H.A.-
ED  - British Crop Protection Council
TI  - Weed control handbook: principles 
SN  - 0632010185
PY  - 1982///
CY  - Oxford
PB  - Blackwell Scientific Publications
KW  - Weeds
KW  - Control
KW  - Herbicides
ER  -