A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2018; you can also visit the original URL.
The file type is application/pdf.
Susumu YOKOYAMA, Naohide TUZUKI, Takashi KATOH, Yuzo SANADA, David M. Bodily, Wendell H. Wiser. "Chemical Structure of Heavy Oil Derived from Coal Hydrogenation by Mass Spectroscopy." Journal of the Fuel Society of Japan 57.9 (1978) 748-757