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- 23009195 contributor B636471.
- 23009195 created "1922]".
- 23009195 date "1922".
- 23009195 date "1922]".
- 23009195 dateCopyrighted "1922]".
- 23009195 extent "4 p.".
- 23009195 isPartOf "Contributions from the Mount Wilson Observatory. no. 248".
- 23009195 issued "1922".
- 23009195 issued "1922]".
- 23009195 language "eng".
- 23009195 publisher "[Chicago,".
- 23009195 subject "QB4 .C32 no. 248".
- 23009195 subject "Stars Spectra.".
- 23009195 subject "Variable stars.".
- 23009195 title "Changes in the spectrographic elements of Y Sagitarii, by John C. Duncan ...".
- 23009195 type "text".