TY  - BOOK
AU  - Helyer, Neil
TI  - Colour Handbook of Biological Control in Plant Protection
U1  - 632.96 
PY  - 2003///
CY  - Spain
PB  - Royal Horticultural Society
KW  - Post Graduate Reference
KW  - Agricultural pests
KW  - Biological pest control agentsNatural pesticides Protection of PlantsBotany
ER  -