TY - RPRT TI - Organic petrology and coalbed gas content, Wilcox Group (Paleocene-Eocene), northern Louisiana AU - Paul C. Hackley AU - Peter D. Warwick AU - F. Clayton Breland PY - 2007 DO - 10.1016/j.coal.2006.05.009 UR - https://pubs.usgs.gov/publication/70029969 ID - 70029969 ER -