893 resultados para Teaching of astronomy
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"January 1914".
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"Prepared by Rua Van Horn."--p. iii.
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Mode of access: Internet.
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A popular grammar of the elements of astronomy : adapted to the use of students and public schools /
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Mode of access: Internet.
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p. 117-134: address ... Springfield 1919.
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Reprinted form the Geographical teacher, v. 2, June 1903.
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Mode of access: Internet.