000 00343nam a2200133Ia 4500
008 220721s1953 xx 000 0 und d
041 _aeng
082 _a595.76(54)
100 _aMayr, Ernst
245 _aMethods and Principles of Systematic Zoology
260 _aNew York
_bMcgraw Hill Book
_c1953
300 _a328P.
999 _c74641
_d74641