United States National Archives and Records Service. (1973). User evaluations of microfilm readers for archival and manuscript materials. National Archives and Records Service.
Citace podle Chicago (17th ed.)United States National Archives and Records Service. User Evaluations of Microfilm Readers for Archival and Manuscript Materials. Washington, D.C.: National Archives and Records Service, 1973.
Citace podle MLA (8th ed.)United States National Archives and Records Service. User Evaluations of Microfilm Readers for Archival and Manuscript Materials. National Archives and Records Service, 1973.
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