1. Asphalts and allied substances;Abraham,1945
2. The geology and exploration potential of the heavy oil sands of Venezuela (the Orinoco Petroleum Belt.);Alayeto;Membership Canadian Society of Petroleum Geologists,1974
3. Application of in situ methods of oil recovery to tar sands;Ali;Membership The Canadian Society of Petroleum Geologists,1974
4. The oil-shale potential of the early permian white band Formation in Southern Africa;Anderson;Special Publication Geological Society of South Africa.,1979
5. Andrews, I. J. (2013). The Carboniferous Bowland Shale gas study: Geology and resource estimation. Br. Geol. Surv. Dep. Energy Clim. Change, London, UK.