000 00487nad a22001457a 4500
008 120525s1917 -us||||| |||| 00| 0 eng d
041 _aeng
100 1 _aSumner, Francis B.
245 1 4 _aThe role of isolation in the formation of a narrowly localized race of deer-mice (Peromyscus) /
_cF. B. Sumner
260 _a[S.l. :
_bs.n.],
_c1917
300 _a173-185 p. ;
_c25 cm
440 1 _aThe American naturalist ;
_v51
760 _03911
_93911
_tBiologia generale.
_w3911
942 _2ddc
_cPM
999 _c34796
_d34796