TY  - BOOK
AU  - Sagar, G.R.
AU  - Sagar, G.R.
TI  - Origin of pest, parasite,diseases and weed problems
U1  - 632 
PY  - 1977///
CY  - Oxford
PB  - Blackwell Scientific Publication
KW  - Weed Problems
N1  -  British Ecological Society symposium 18th, 1976
ER  -