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082 _a618. 1
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090 _aCOLECCION GENERAL
041 0 _aeng
100 1 _aBenson, Ralph C.
245 1 _aCurrent obstetric gynecologic :
_bdiagnosis treatment /
_cRalph C. Benson
250 _a3ยช. ed
260 _bLange Medical
_c19800000
_aCalifornia, us
300 _a1001
_bilus
650 0 7 _aOBSTETRICIA
650 0 7 _aGINECOLOGIA
942 _2ddc
_cBK