TY  - BOOK
AU  - Upadhyaya, Mahesh K & Blackshaw, Robert E
TI  - Understanding weed crop interactions to manage weed problems
SN  - 139781845932909
U1  - 632.5 UPA 
PY  - 2007///
CY  - USA
PB  - CABI
N1  - Includes index
ER  -