Supplement to Standard Practices for Design of MTR and ETR Safety Circuits
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Supplement to Standard Practices for Design of MTR and ETR Safety Circuits, report, November 21, 1958; [Idaho Falls, Idaho]. (https://digital.library.unt.edu/ark:/67531/metadc67275/: accessed May 29, 2023), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.