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The variations in the profiles of strong Fraunhofer lines along a radius of the solar disc ...Houtgast, Jakob. January 1942 (has links)
Proefschrift--Utrecht. / "Stellingen" ([2] p.) inserted. Bibliography: p. [141]-143.
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The variations in the profiles of strong Fraunhofer lines along a radius of the solar disc ...Houtgast, Jakob. January 1942 (has links)
Proefschrift--Utrecht. / "Stellingen" ([2] p.) inserted. Bibliography: p. [141]-143.
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