00421nam a2200109Ia 4500008004100000082001800041100001700059245006200076260004500138630002800183650010000211211122s9999||||xx |||||||||||||| ||und||  a632.96bHEL-C  aHelyer, Neil 0aColour Handbook of Biological Control in Plant Protection  bRoyal Horticultural SocietyaSpainc2003  xPost Graduate Reference  aAgricultural pestsvBiological pest control agentsNatural pesticides Protection of PlantsBotany