00441nam a2200121Ia 4500008004100000082001700041100001500058245006900073260003300142365000600175630006900181730006900250100415s9999    xx            000 0 und d  b13229a574.5  aBARBIER, B  aEconomics and ecology: new frontiers and sustainable development  aLONDONc1993bCHAPMAN & HALL  b0  aEconomics and ecology: new frontiers and sustainable development  aEconomics and ecology: new frontiers and sustainable development