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Photograph, Big Dome
Photograph, HAO Group
Photograph, Dedication of the Large Dome
Photograph, Large Dome and Sheep Mountain
Photograph, High School graduation
Utilization of transit of mercury for research purposes
Possible test of response of atmosphere to solar corpuscular streams
Flare activity index
Photograph, Installing the Small Dome
Photograph, 1952 Eclipse Expedition
Photograph, 1952 Eclipse Expedition
Photograph, 1952 Eclipse Expedition
Photograph, 1952 Eclipse Expedition
Photograph, Installing the Small Dome
Photograph, Installing the Small Dome
Photograph, Installing the Small Dome
Photograph, 1952 Eclipse Expedition
A contribution to the study of the relations between solar flares and sunspot groups
[Emission line corona]
Brondened H? absorption lines spectra, 14 May 1951

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