00300nam a2200097Ia 4500008004100000082001500041100002600056245007900082260003300161300000800194140113s9999    xx            000 0 und d  a595.7   L2  a"Van Emden, H.F.,Ed."  aApplied Technology :With special reference to study of aphids in the field  a1972bAcademic PresscLondon  a344