St. John, Ancel,  1882- <br/><br/>
Industrial radiography /  
by Ancel St. John, Ph.D., and Herbert R. Isenberger. 
 - New York,  London,  Wiley;  Chapman & Hall,  1934. 
 - 232 p.  illus.  24 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>RADIOGRAFIA<br/>INVESTIGACION INDUSTRIAL
<br/><br/><label>Universal Decimal Class. No.: </label>620.179.15