00431nam a2200133Ia 450000500170000000800410001702000180005805000230007610000220009924500790012125000120020026000600021265000250027220251229084927.0251229s9999    xx            000 0 und d  a9780805310313  a HC 79 .E5C45 1991  aChiras, Daniel D. 0aEnvironmental scienceb action for a sustatinable future cDaniel D Chiras  a 3rd ed  aRedwood Cityb   The Benjamin/Cummings Publishingc1991  aEnvironmental Policy