TY  - GEN
AU  - Ashton, Floyd M.
AU  - Monaco, Thomas J.
TI  - Weed science: principles and practices 
SN  - 0471600849
U1  - 632.5 
PY  - 1991///
CY  - New York
PB  - Jone Wiler & Sons
KW  - Weeds
KW  - Plant injuries, diseases, pests
ER  -