00304nam a2200109Ia 450000500170000000800410001708200140005810000150007224500630008726000360015030000080018620260225051107.0260224s9999||||xx |||||||||||||| ||und||  a595.7 CLA  aL.R. Clark 4aThe ecology of insect populations in theory  and practice   aLondon: Chapman and Hall c1970  a232