Chemistry and structure of coal-derived asphaltens :  phase III / 
by T. F. Yen 
 - Washington, D.C. :  U.S. Government Printing Office,  1978 
 - 42 p. :  ill. ;  28 cm. 
 - Fossil energy;  FE-2031-10 .
<br/><br/> Quarterly progress report for the period October - December 1977  Work performed under contract no. EX-76-C-01-2031  On cover: Fossil energy  Bibliography : p. 42 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Coal liquefaction
<br/><br/><label>Dewey Class. No.: </label>333.913