000 00273 a2200085 4500
080 _a577.4
_bW 349 P
245 1 _aPrinciples of biogeography
_bAn introduction to the functional mechanisms of ecosystems
_cby D. Watts
260 _aLondon
_bMcGraw Hill
_c1971
650 _aBiogeography
999 _c32253
_d32253