00307nam a2200109Ia 450000500170000000800410001708200140005810000160007224500580008826000430014630000080018920260224041026.0260224s9999||||xx |||||||||||||| ||und||  a574.5 ART  aArthur, A.  4aThe green machine : ecology and the balance of nature  aOxford, UK ; USA: B. Blackwell, c1990  a257