TY - RPRT TI - Isotopically exchangeable organic hydrogen in coal relates to thermal maturity and maceral composition AU - Maria Mastalerz AU - A. Schimmelmann PY - 2002 DO - 10.1016/s0146-6380(02)00064-5 UR - https://pubs.usgs.gov/publication/70024413 ID - 70024413 ER -