TY  - BOOK
AU  - Hill, Thomas A.
TI  - The biology of weeds
T2  - The Institute of Biology s Studies in Biology; no.79
U1  - 632.51:574 L7 
PY  - 1977///
CY  - New Delhi
PB  - Oxford and IBH
KW  - Thomas A.Hill
KW  - Weeds-experiments,Weeds-Characteristics
ER  -