00280nam a2200097Ia 4500008004100000082002000041100002800061245005900089260002600148300000800174140113s9999    xx            000 0 und d  a595.7:591.5  L2  a"Clark, L.R., et al�"  aThe ecology of insect populations in theory & practice  a1967bMethuencLondon  a232