Subsurface 



Geology 



in 



Petroleum 



Exploration 



a symposium 



edited by 

 John D. Haun 



Associate Professor of Geology, 

 Colorado School of Mines 



and 



L. W. LeRoy 



Head of the Department of Geology, 

 Colorado School of Mines 



Colorado School of Mines 



Golden, Colorado 

 1958 



