00260nam a22001097a 4500020001500000082001400015100002300029245005400052250000600106260003000112300000800142  a8131712664  a363.7/WRI  aWRIGHT, RICHARD T.  aENVIORNMENTAL SCIENCE TOWARD A SUSTAINABLE FUTURE  a9  aNEW DELHIbPEARSONc20017  a712