TY  - BOOK
AU  - Kropff, M.J., ed.
AU  - Van Laar, H.H., ed.
TI  - Modelling Crop-Weed interactions
SN  - 0851987451
U1  - 574.5247011 
PY  - 1993///
CY  - Wallingford
PB  - CAB International
ER  -