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Raymond Smith Dugan

(Dugan, Raymond Smith, 1878-)

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Dugan, Raymond Smith, 1878-: Photometric researches, the Algol-system Z Draconis (The Observatory, 1912) (page images at HathiTrust)
Dugan, Raymond Smith, 1878-: Photometric researches; the elipsing variables X trianguli, RT Sculptoris (The Observatory, 1928) (page images at HathiTrust)

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