Protection against ionizing radiation from external sources :  a report by Committee 3 of the International Commission on Radiological Protection, adopted by the Commission in November 1969. 

 - [1st ed.]. 
 - New York Oxford   Published for the International Commission on Radiological Protection by Pergamon Press  1976 
 - 141 p.  graphs    25 cm. 
 - ICRP  15, 21. International Comission On Radiological Protection Report  15, 21. .
<br/><br/> "Containing Data for protection against ionizing radiation from external sources, and originally published as ICRP publication 21".  At head of title: Radiation protection. 
<br/><br/>Bibliography: p. 77-81. 
<br/><br/><label>ISBN: </label>0080209068 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ionizing radiation--Safety measures.<br/>Radiology, Medical--Safety measures.
<br/><br/><label>Dewey Class. No.: </label>539.722 INT 1976