TY  - BOOK
AU  - Roberts H A Ed.
TI  - Weed control handbook:Principles
U1  - J:57.56g, M2 
PY  - 1982///
CY  - Oxford
PB  - Blackwell Scientific Publications       
KW  -  Weed
KW  - Agriculture
N1  - Bibliography 490-92p
ER  -