Open AccessInvestigation of coal structure. Quarterly report No. 7, October 1, 1993--December 31, 1993
Publication year - 1994
Language(s) - English
Resource type - Reports
DOI - 10.2172/10133723
Subject(s) - coal , phenol , pyridine , swelling , canyon , chemical engineering , materials science , chemistry , mathematics , organic chemistry , composite material , engineering , geography , cartography