000 00314 a2200133 4500
080 _a577.8
_bC 72 S
245 1 _aSex determination
_cby F.A.E. Crew
250 _a2nd edn.
260 _aLondon
_bMethuen & Co.
_c1946
650 _aSex Determination
100 1 _aCrew, F.A.E.
_d
300 _a138 p.
901 _a73605
999 _c32316
_d32316