00311nam a2200109Ia 450000500170000000800410001708200140005810000200007224500550009226000460014730000080019320260224040856.0260224s9999||||xx |||||||||||||| ||und||  a363.7 HUM  aHumphrey, C.R.  0aEnvironment, energy, and society : exemplary works  aBelmont: Wadsworth ThomSon Learningc2003  a431