00458cam a22001697a 4500008004000000020001500040082001300055100002100068245006900089250001200158260002900170300001000199650002200209650001800231650001200249650002700261180718b1991   xxu||||| |||| 00| 0 eng d  a0534134580  aO91 M614  aMiller, G. Tyler  aEnvironmental science : sustaining the earthcby G. Tyler Miller  a3rd ed.  aBelmontbWadsworthc1991  a645p.  aNatural resources  aHuman ecology  aEcology  aEnvironmental sciences