Keats, Theodore E. An Atlas of Normal Roentgen Variants That May Simulate Disease Theodore E. Keats. - 2d ed. - Chicago : Year Book Medical Publishers, c1979. - xv, 616 p. : chiefly ill. ; Includes index. ISBN: 0815150075 : 9780815150077 Subjects--Topical Terms: Radiography, Medical--Atlases.Radiography--Atlases. LC Class. No.: RC941 / .K438 1979