http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Occupational-disease legislation in the United States, 1936 with appendix for 1937
Labor Statistics Bureau bulletin 652; Occupational-disease legislation in United States, 1936, with appendix for 1937
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ProQuest U.S. Serial Set Digital Collection