Schaeffer O A <br/><br/>
Potassium argaon dating 

 -  1966 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>52010 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Stratigraphy<br/>Geology
<br/><br/><label>Dewey Class. No.: </label>H5:(E1:112), K6