Kremkau, Frederick W. Diagnostic ultrasound : principles and instruments / Frederick W. Kremkau - 4th ed. - Philadelphia : W. B. Saunders, 1993 - 411 p. : ill. ; 24 cm. ISBN: 0721643086 LCCN: 92-48829 Subjects--Topical Terms: Ultrasonography National Library of Medicine Call No.: WB289 / .K92d 1993