00394nam a2200121 a 450000500170000002000150001708200160003210000200004824500910006826000280015930000250018749000600021220251203110323.0  a0415136180  a304.28bHUG  aHughes,J.Donald  aEnvironmental history of the worldbhumankind's changing role in the community of life  aLondonbRoutledgec2001  axiv,264p.c24cm.bHB  aRoutledge studies in physical geography and environment