00426nam a22001457a 4500008004100000020001400041082001100055100003100066245008400097260004400181300001600225650001200241942001200253999001500265100712t        xxu||||| |||| 00| 0 eng d  a070685738  a333.721 aWatt, Kenneth E. F. 94587  aEcology and resource management:ba quantitive approach/cby Kenneth E. F. Watt  aLondon:bMcGraw-Hill Book Companyc1968  axii, 450 p.  aEcology  2ddccBK  c1885d1885