000 00407nam a2200145Ia 4500
008 140610s1928 xx 000 0 und d
090 _aBS.15/R
100 _aRobson, G.C.
_9146863
245 _aThe species problem. An introduction to the study of evolutionary divergence in natural populations
260 _aLondon
_c1928
300 _a283p
650 _aBook
_9198684
650 _aSpeciation
_9199123
942 _cBK
999 _c14973
_d14973