Roberts, Derrick P. Radiographic imaging : a practical approach / by Derrick P. Roberts and Nigel L. Smith. - Edinburgh : Churchill Livingstone, 1994. - 252 p. : ill. ; 26 cm. ISBN: 0443043973 RM117.76 Subjects--Topical Terms: Diagnostic imaging.Technology, Radiologic.Quality control.Environmental exposure.Environmental pollutants--Great Britain--Legislation.