Harper, Dorothy <br/><br/>
Isotopes in action / 
Dorothy Harper 
 - Oxford :  Pergamon Press,  1963 
 - 172 p. :  ill. ;  20 cm. 
 - Commonwealth and International Library of Science, Technology, Engineering and Liberal Studies. Physics division  v.5 .
<br/><br/><label>LCCN: </label>63-11609 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Radioisotopes<br/>Isotopes