TY - BOOK AU - Howaida G.EL-Said, AU - Mohamed Khalil ABdel Khalik AU - Fadia Mohmoud AU - Timothy Feltes TI - Comparative study between transthoracic and transesophageal echocardiography in atrrioventricular canal defects : : A clinical Study aIn The Pediatric Age Group / PY - 1997/// KW - Pediatrics N1 - Thesis (Ph.D)-Cairo University, 1997; Bibliography: pages 178-193. ER -