Parallaxes of fifty stars determined at the Sproul Observatory. Sixth list / by John H. Pitman and Michel S. Kovalenko. Summary of the parallaxes of 300 stars determined at Sproul Observatory, by John H. Pitman and Alice Rogers.
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Published: |
[Swarthmore,
193- ]
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Series: | Sproul Observatory publications ;
no. 12. |
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Format: | Book |
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