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The new combination spectrohelioscope and spectroheliograph for the Cook observatory ...

LIBRA 522.67 L579
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LIBRA 378.748 POA1937.7
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Format:
Author/Creator:
Language:
English
Subjects (All):
Local Subjects:
Physical Description:
i unnumbered leaf, 11 leaves : diagrams VII plates. ; 29 cm
Production:
[Philadelphia], 1937.
Notes:
Thesis (M.A. in Astronomy)--Graduate School of Arts and Sciences, University of Pennsylvania, 1937.
OCLC:
244994986

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