Barker, Lawrence K. Producing SNG by hydrogasifying in situ crude shale oil Barker, Lawrence K. - Washington Bureau of mines 1975 - 37 p. - RI 8011 . Subjects--Topical Terms: MINERIAMINING Subjects--Index Terms: GASIFICACION DE ACEITES DE ESQUISTO SHALE OILS GASIFICACION Universal Decimal Class. No.: 622