Nieuwenkamp, W. <br/><br/>
Stereograms for the determination of plagioclase feldspars in random sections 
by W. Nieuwenkamp 
 - Amsterdam  Elsevier North-Holland  1966 
 - 29 p. : ill. ; 27 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Feldspar--Congresses