TY - BOOK AU - Worell,Ernst AU - Levine,Mark AU - Price,Lynn AU - Martin,Nathan AU - Broek,Richard van den AU - Blok,Kornelis TI - Potentials and policy implications of energy and material efficiency improvement SN - 92-1-104477-4 PY - 1997/// CY - New York PB - United Nations KW - Energy resources development programmes ER -