TY - RPRT TI - Chemical analyses of lignite from the Wilcox Group, Texas region, central and eastern Texas AU - Rick T. Hildebrand AU - Joseph R. Hatch AU - Christopher D. Henry PY - 1979 DO - 10.3133/ofr791250 UR - https://pubs.usgs.gov/publication/ofr791250 ID - ofr791250 ER -