000 00279nam a2200121Ia 4500
008 191031s9999 xx 000 0 und d
100 _aAlex fraser
245 0 _a"Heredity, genesis and chromosomes"
260 _bMcgrawhill
260 _c1966
365 _b58.62
942 _cBK
999 _c197354
_d197354