Geographic average, a suggested method for the study of distribution. American Museum novitates ; no. 5

Lutz, Frank Eugene, 1879-1943.2005-10-062005-10-061921http://hdl.handle.net/2246/46647 p. ; 24 cm.4765001 bytesapplication/pdfen-USQL1 .A436 no.5, 1921Biogeography -- North America -- Mathematical models.Biogeography -- Mathematical models.Geographic average, a suggested method for the study of distribution. American Museum novitates ; no. 5text