TY  - GEN
AU  - Aldrich,R.J.
TI  - Weed-crop ecology: principles in weed management 
SN  - 0534028330
PY  - 1984///
CY  - N. Scituate, Mass.
PB  - Breton Publishers
KW  - Weeds
KW  - Control
KW  - Ecology
ER  -