893 resultados para Teaching of astronomy
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Mode of access: Internet.
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Photocopy.
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Mode of access: Internet.
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(1909) repl. by 035738
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Bibliography: p. 243-245.
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Mode of access: Internet.
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Includes index.
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Mode of access: Internet.
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Added t.-p. engraved.
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Mode of access: Internet.
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Mode of access: Internet.