Putman, J. L. <br/><br/>
Isotopes / 
[by] J. L. Putman. 
 - [Harmondsworth, Eng.] :  Penguin Books,  c1960[reprinted 1961]. 
 - 232 p. :  illus. ;  18 cm. 
 - Pelican books .
<br/><br/>Bibliography: p. [229]-230. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Radioisotopes.
<br/><br/><label>Dewey Class. No.: </label>539.74  /  PUI 1961