00427 a2200145 4500020001500000082001800015100002200033245004700055260005900102300002000161650001400181650002500195650002800220650003300248 a8176481645 a333.9514bENV aKhan, M. A. eed. aEnvironment, Biodiversity and conservation aNew DelhibA. P. H. Publishing Corporationc2000g2000 axiv,532p.c26cm aEconomics aBiological resources aOther natural resources aEconomics of land and energy