Tenth Oil Shale Symposium proceedings symposium sponsored by Colorado School of Mines, April 21-22, 1977, Golden, Colorado ; John B. Reubens, proceedings editor - Symposium on Oil Shale 1977 : Colorado School of Mines); Reubens, John B; Colorado School of Mines (Golden : Colorado School of Mines Press, 1977)
Keywords: Oil-shales -- Congresses