004550a00a22001690004500020001800000245004900018100001900067100001800086260004100104260000900145300001100154082001700165306003000182760005300212015001100265887000900276  a0-683-04088-X  aUltrasonography in Obstetrics and Gynecology  aHobbins John C  aWinsberg Fred  bThe Williams & Wilkins Com:Baltimore  c1977  a174pgs  a618.2-073H51  aUltrasonics in obstetrics  bNo.6 cupboard - Obstetrics & Gynaecology Section  a000569  a25/=