Zaidi, Shahida. Real-time ultrasound in obstetrics and gynaecology / Real time ultrasound Shahida Zaidi. - 2nd edition. - Karachi : Twel Publishers, 1991. - 339 p. : ill. ; 26 cm ISBN: 96981130029 Subjects--Topical Terms: Ultrasound--Gynaecology. LC Class. No.: RC 78.7 / .Z35 1991