TY - RPRT TI - Characterization of the origin of coalbed gases in southeastern Illinois Basin by compound-specific carbon and hydrogen stable isotope ratios AU - D. Strapoc AU - Maria Mastalerz AU - C. Eble AU - A. Schimmelmann PY - 2007 DO - 10.1016/j.orggeochem.2006.09.005 UR - https://pubs.usgs.gov/publication/70033047 ID - 70033047 ER -