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- 21007736 contributor B609170.
- 21007736 coverage "Milky Way.".
- 21007736 created "1920]".
- 21007736 date "1920".
- 21007736 date "1920]".
- 21007736 dateCopyrighted "1920]".
- 21007736 extent "21, 4 p.".
- 21007736 isPartOf "Contributions from the Mount Wilson observatory. nos. 191 and 192".
- 21007736 issued "1920".
- 21007736 issued "1920]".
- 21007736 language "eng".
- 21007736 publisher "[Chicago,".
- 21007736 spatial "Milky Way.".
- 21007736 subject "Nebulae.".
- 21007736 subject "QB4 .C32 no. 191-192".
- 21007736 subject "Stars Magnitudes.".
- 21007736 subject "Surface brightness (Astronomy)".
- 21007736 title "The surface brightness of the galactic system as seen from a distant external point and a comparison with spiral nebulae. Magnitudes of faint comparison stars for Nova Persei, no. 2, by Frederick H. Seares.".
- 21007736 type "text".