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1
Publications of the United States Naval Observatory, Second Series. Volume XIII - Appendix I.
Published 1930Subjects: Online Access
Government Document Electronic eBook -
2
Annual report of the Board of Regents of the Smithsonian Institution showing the operations, expenditures, and condition of the institution for the year ending June 30, 1937.
Published 1937Subjects: Online Access
Government Document Electronic eBook