TY - RPRT TI - Assessment of undiscovered oil and gas resources of the Volga-Ural Region Province, Russia and Kazakhstan, 2010 AU - T. R. Klett AU - Christopher J. Schenk AU - Ronald R. Charpentier AU - Michael E. Brownfield AU - Janet K. Pitman AU - Troy A. Cook AU - Marilyn E. Tennyson PY - 2010 DO - 10.3133/fs20103095 UR - https://pubs.usgs.gov/publication/fs20103095 ID - fs20103095 ER -