TY  - BOOK
AU  - Helyer, Neil
TI  - Biological control in plant protection: a color handbook
SN  - 9781840761177
AV  - SB 975 .H45/ 
CY  - New York
KW  - Agricultural pests--Biological control--Handbooks, manuals, etc. Biological pest control agents--Handbooks, manuals, etc. Insects as biological pest control agents--Handbooks, manuals, etc. Natural pesticides--Handbooks, manuals, etc
ER  -