Kremkau, Frederick W. Diagnostic ultrasound : principles and instruments / Frederick W. Kremkau - 7th ed. - St. Louis : Saunders Elsevier, 2006 - xvi, 521 p. : ill. ; 28 cm. ISBN: 0721631924 (hc.) RM237.57 Subjects--Topical Terms: Ultrasonography National Library of Medicine Call No.: WN208 / .K92d 2006 9