Casper, J <br/><br/>
The introduction in 1928-29 of thorium dioxide in diagnostic radiology.  [electronic resource] 

 -  Annals of the New York Academy of Sciences  Dec 1967 
 - 527-9 p.  digital 
<br/><br/> Publication Type: Historical Article; Journal Article 
<br/><br/><label>ISSN: </label>0077-8923 
<br/><br/><label>Standard No.: </label>10.1111/j.1749-6632.1967.tb50255.x  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Germany<br/>History, 20th Century<br/>Radiography--history<br/>Thorium Dioxide--history