00681nam a2200217 a 450000500170000002000150001708200160003210000060004811000200005424500650007426000410013930000210018069000330020169000350023469000400026969000250030996400300033499700120036499900170037695200700039320251203110056.0  a1559634766  a333.72bDAI  d_  aDaily, Gretchen  aNature's ServicesbSocietal dependence on Natural ecosystems  aWashington, D.C.bIsland Pressc1997  axx,392p.c23 cm.  aNature-Effect of human being  aHuman ecology-Economic aspects  aBiotic communities-Economic aspects  aEcosystem management  bENGLISHcd333eBOOKfg_  a96057 C  c76884d76884  00104070aPUbPUd2000-02-14g1227.72l0o333.72 DAIp96057yBK