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Rasnick, W. H.; Arehart, T. A.; Littleton, D. E. & Steger, P. J.Porous graphite air-bearing components as applied to machine tools,
article,
January 1, 1974;
Tennessee.
(https://texashistory.unt.edu/ark:/67531/metadc1055862/:
accessed July 16, 2024),
University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu;
crediting UNT Libraries Government Documents Department.