000 00368nam a2200121Ia 4500
008 140113s9999 xx 000 0 und d
082 _a576.16 G8
100 _a"Robson, G.C."
245 _aThe Species Problem: an introduction to the study of evolutionary divergence in natural populations.
260 _a1928
_bOliver & Boyd
_cLondon
300 _a283
942 _cBK
999 _c60233
_d60233