Specification of high activity gamma-ray sources. 

 - Washington  ICRU  c 1970 
 - vi, 26 p.  ill.    28 cm. 
 - ICRU  18 International Commission on Radiation Units and Measurements report  18 .
<br/><br/> Includes index. 
<br/><br/>Bibliography: p. 22. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Gamma ray sources--Specifications.
<br/><br/><label>LC Class. No.: </label>QC793.5.G322 RA1231.R2  / I55 no. 18 
<br/><br/><label>Dewey Class. No.: </label>539.7222 INT 1970