00321nam a2200121Ia 4500008004100000020001600041040003800057100002200095245002800117250000600145260003200151300001600183211217s9999    xx            000 0 und d  a07-094125-4  cJayakar Knowledge Resource Centre  aWallwork , John A 0aEcology of soil animals  a1  bMCGRAW - HILLaLondonc1970  avii,259p p.