Alles van: Gerrit Hendrik ten Bruggen Cate
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Gerrit Hendrik ten Bruggen Cate Determination and discussion of the spectral classes of 700 stars mostly near the North pole
Engels | 44 pagina's | Hoitsema, Groningen | 1920
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Gerrit Hendrik ten Bruggen Cate Determination and discussion of the spectral classes of 700 stars mostly near the North pole
Engels | 44 pagina's | Hoitsema, Groningen | 1920
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