TY  - BOOK
AU  - International Symposium on Biological Control of Weeds, Third,
AU  - Wapshere, A. J.
TI  - Proceedings
SN  - 851981348
U1  - 632.954 
PY  - 1973///
CY  - England
PB  - Commonwealth Agricultural Bureaux
KW  - Agriculture and related technologies
KW  - Technology (Applied sciences)
KW  - Biological control
KW  - Weeds
ER  -