Jeffrey, R. Brooke Color and power doppler sonography : a teaching file / R. Brooke Jeffrey, Jr. , Philip W. Ralls - Philadelphia : Lippincott-Raven Publishers, 1998 - 303 p. : ill. ; 29 cm. ISBN: 0397517793 RM656.71 Subjects--Topical Terms: Ultrasonography--Doppler,Color National Library of Medicine Call No.: WN208