Forum on Geology of Industrial Minerals Austin, Texas. (1968). Proceedings, fourth forum on geology of industrial minerals: Themes: geology of chemical raw materials [and] depositional models in economic stratigraphy. The University of Texas at Austin, Bureau of Economic Geology.

Forum on Geology of Industrial Minerals Austin, Texas. Proceedings, Fourth Forum on Geology of Industrial Minerals: Themes: Geology of Chemical Raw Materials [and] Depositional Models in Economic Stratigraphy. Austin: The University of Texas at Austin, Bureau of Economic Geology, 1968.

Forum on Geology of Industrial Minerals Austin, Texas. Proceedings, Fourth Forum on Geology of Industrial Minerals: Themes: Geology of Chemical Raw Materials [and] Depositional Models in Economic Stratigraphy. The University of Texas at Austin, Bureau of Economic Geology, 1968.