Kilkelly, M. K. Field studies on pharaoh retorted oil shale lysimeters : leach ate, vegetation, moisture, salinityand runoff 1977-1980 / M. K. Kilkelly, H. P. Harbert and W. A. Berg - Washington, D.C. : United States Government Printing Office, 1981 - 7 p. ; 28 cm. Project summary Subjects--Topical Terms: Oil-shalesMine ventilationOil-shale industry Dewey Class. No.: 622.3382