Improved techniques for the extraction of primary forms of energy 

 - Vienna:  Graham and Trotman,  1980 
 - 194 p.  ilustraciones. 
<br/><br/>05179 
<br/><br/>Improved techniques for the extraction of primary forms of energy : a general overview. Introduction , conclusions and recommendations for futher international co - operation. Consolidated reports. Summary of national papers.  
<br/><br/><label>ISSN: </label>0-86010-439-7 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Hidrocarburos<br/>Tecnología<br/>Congresos y Conferencias
<br/><br/><label>Dewey Class. No.: </label>665.5  / U5816