TY  - BOOK
TI  - PROCEEDINGS OF THE SECOND INTERNATIONAL SYMPOSIUM ON BIOLOGICAL CONTROL OF WEEDS
SN  - 0 85198 299 9
AV  - 632/PRO 1
U1  - 632/PRO 
PY  - 1973///
CY  - ENGLAND
PB  - COMMONWEALTH AGRICULTURAL BUREAUX
ER  -