TY - BOOK AU - Keats, Theodore E. AU - Anderson, Mark W. TI - Atlas of normal roentgen variants that may simulate disease SN - 9780323013222;0323013228 PY - 2001/// CY - St. Louis, Mo. PB - Mosby KW - Artifacts KW - Diagnostic Errors KW - Radiography N1 - Includes index ER -