1. Asphalts and Allied Substances. 2. Methods of Testing;Abraham,1948
2. Asphalts and Allied Substances. 1. Historical Review and Natural Raw Materials;Abraham,1960
3. Organic Matter;Alpern;ICCP Draft,1978
4. Steinöl und Brunnenfeuer;Anonymous,1975
5. Origin of hydrocarbons of Uinta Basin;Hunt;Utah. Am. Assoc. Pet. Geol. Bull.,1954