Oleksyshyn, John <br/><br/>
Brown Coal Beds In the Vicinity of Zovkva and Rava Ruska, Ukraine 

 - Philadelphia  Jeferson Medical College  1954 
 -  24 cm 
<br/><br/> Reprinted from "Proceedings of the Pennsylvania Academy of Science",V.28, 1954 
<br/><br/><br/>English 
<br/><br/><label>Subjects--Index Terms: </label>Geology