Clark, Kathleen C. Positioning in radiography / edited by R.A. Swallow and E. Naylor ; assistant editors, E. Roebuck, and A.S. Whitley. - 11th ed. - London : Heinemann Medical Books, 1986. - 424 p. : ill. ; 29 cm Includes index Subjects--Topical Terms: Technology, Radiology.-------- National Library of Medicine Call No.: WN 160 / C547p 1986