Code of practice for the protection of persons against ionizing radiations arising from medical and dental use / 
Department of Health and Social Security ... (et al.) 
 - London :  H. M. S. O.,  1972 
 - 140 p. : ill. ; 22 cm. 
<br/><br/><label>ISBN: </label>0113204663 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Radiation ionizing--Standards<br/>Radiation protection--Standards--United Kingdom