Show
2 citations
related to Burggraaf, Pieter
Show
2 citations
related to Burggraaf, Pieter as an author
Book
Burggraaf, Pieter
(1996)
Harqua Hala letters: The story of Arizona's forgotten 1920s Smithsonian Institution Observatory.
(/isis/citation/CBB000074671/)
Article
Burggraaf, Pieter
(1993)
Manning Harqua Hala's skies.
Journal of Arizona History
(pp. 23-44).
(/isis/citation/CBB000035959/)
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