Perez, Julio E. Doppler echocardiography : a case studies approach / By Julio E. Perez - New York : McGraw-Hill, 1987 - 258 p. : ill. ; 24 cm. ISBN: 0070493227 Subjects--Topical Terms: Echocardiography National Library of Medicine Call No.: WG141.5.E2 / P438