Safe handling of radioactive isotopes. 

 - Washington  1949 
 - vi, 30 p.  ill.  28 cm. 
 - National Committee on Radiation Protection  National Bureau of Standards Handbook  42 NCRP  National Bureau of Standards Handbook  42 .
<br/><br/> Superseded by Handbook no. 92 with title: Safe handling of radioactive materials. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Isotopes.<br/>Radiation--Safety measures.
<br/><br/><label>LC Class. No.: </label>QC100  / .U565 no. 42 
<br/><br/><label>Dewey Class. No.: </label>621.4837 UNI 1949 
<br/><br/><label>National Library of Medicine Call No.: </label>WN 650  / N277s 1949