00524nam a2200181Ia 4500008004100000020001500041082001400056100001800070245005700088260005200145300000800197650004100205650003400246653002300280653001400303653001000317700001500327170901s1977    xx            000 0 und d  a0632002263  a632bC32O  aCherrett, J.M 0aOrigins of Pest, Parasite, Disease and Weed Problems  aLondonbBlackwell Scientific Publicationsc1977  a413  aAgriculture and related technologies  aTechnology (Applied sciences)  aAgricultural pests  aParasites  aWeeds  aSagar, G.R