TY  - BOOK
AU  - Yen,T.F.
ED  - United States.
ED  - University of Southern California
ED  - United States Government Printing Office,
TI  - Chemistry and structure of coal-derived asphaltens: phase III 
U1  - 333.913 23
PY  - 1978///
CY  - Washington, D.C.
PB  - U.S. Government Printing Office
KW  - Coal liquefaction
N1  - 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
ER  -