Keats, Theodore E. Atlas of normal roentgen variants that may simulate disease / Theodore E. Keats, Mark W. Anderson. - 8th ed. - Philadelphia, Pa. : Mosby Elsevier, 2007 - xxii, 1321 p. : ill. 31 cm. Includes index. ISBN: 9780323043007;0323043003 Subjects--Topical Terms: ArtifactsDiagnostic ErrorsRadiography National Library of Medicine Call No.: WN 17 / .K43 2007