Relationship between coal and black oils in the west European fuel market. 

 - Geneva :  UN,  1954 
 - 77p. :  ill. ;  30 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Natural resources<br/>Petroleum industry and trade<br/>Coal trade<br/>Minerals
<br/><br/><label>Dewey Class. No.: </label>553.1  / ECE-2