000 00280 a2200109 4500
005 20220414001947.0
022 _a00144142
245 _aObstetrics and gynecology
260 _aAmsterdam
_bAssociated Sientific Publishers
_c1977
490 _aExcertpa medica
_vVol.31
942 _2lcc
_cCR
999 _c18861
_d18861