000 00286cam a2200121ua 4500
082 _a591.33
_bBEE/EM
100 _aBeer, Gavin de .
_91938
245 _aEmbryos and Ancestors /
250 _a3 /
260 _aOxford :
_bClarendon Press ,
_c1958.
300 _a197 ; .
942 _cBK
999 _c333257
_d333257