The chemical analysis of rock powders by automatic X-ray fluorescence / 
 Chemical geology 
[by] B.E. Leabe [and others]. 
 - [Amsterdam :  Elsevier,  1969] 
 - Chemical geology ;  v. 5, no. 1 .
 - Chemical geology ;  v. 5, no. 1 (special issue) .
<br/><br/><label>Subjects--Topical Terms: </label><br/>X-ray spectroscopy.