Oleksyshyn, John <br/><br/>
Gypsum Deposits In Podolia and Opolia, Ukraine, and Their Stratigraphic Significance 

 - Philadelphia ?  1954 
 - 10 pages  Reprint  24 cm 
<br/><br/> Reprinted from: Proceedings of the PennsylvaniaAcademy of Sciences,pages 179-188. Vol. 28, 1954 
<br/><br/><br/>English 
<br/><br/><label>Subjects--Index Terms: </label>Geology