Efficient use of fuels  bibliographical index /  [microform] : 
prepared by the Industry Division. 
 - Geneva :  United Nations,  1955- 
 - United Nations. [Document] ;  E/ECE/200, E/ECE/Coal/UWP/39 .
 - Document (United Nations) ;  E/ECE/200, E/ECE/Coal/UWP/39 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fuel -- Bibliography.--Fuel -- Bibliography.