00289nam a2200109Ia 450000500170000000800410001708200150005810000190007324500430009226000360013530000080017120260225051121.0260224s9999||||xx |||||||||||||| ||und||  a632.95 SOM  aL. Somerville  0aPesticides effects on soil Microflora   aLondon: Taylor & Francis c1987  a240