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By: Sibrell, P. L. - Burton, Samuel R. M. - Cornelius, David E. - United States. Bureau of Land Management.Edition:Publication info: Amarillo, Tex, U.S. Department of the Interior, Bureau of Land Management, Helium Operations, 1997Volume:Series:Holding Institution: Bureau of Land ManagementSubjects: Amines Chromium Gases Helium PurificationBHL Collections: