SINGH, K . STEP BY STEP ULTRASOUND IN OBSTETRICS ( WITH CD ) / Textual Documents NULL. - NULL : JAYPEE BROTHERS MEDICAL PUB. , 2004. - 166 : x ; NULL . OBST. & GYNAE. ISBN: 8180612031 325.00 Subjects--Index Terms: OBST. & GYNAE. Dewey Class. No.: 618.2 / SIN