TY - BOOK AU - Worrell E, and others TI - Potentials and policy implications of energy and material efficiency improvement T2 - United Nations, Policy Coordination And Sustainable Development (Deptt of-) , Publication U1 - X9(F55):75.1.N9, N7/UN PY - 1997/// CY - New York PB - United Nations U S A KW - Fuel ER -