000 00326nam a2200133Ia 4500
008 200512s9999 xx 000 0 und d
082 _a618.1
100 _aPeter callen
245 0 _aUltrasonography in obstetrics and gynecology
250 _a-
260 _bSaunders
_c-
440 _v_
650 _aobstetrics and gynecology
999 _c51981
_d51981