The annular eclipse of April 7, 1940 in the ionosphere / by Isabel M. Lewis. [10940]

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The annular eclipse of April 7, 1940 in the ionosphere / by Isabel M. Lewis. [10940]

http://www.worldcat.org/oclc/39725822

2 leaves : ill. ; 32 cm.

US Naval Observatory, James M. Gilliss Library

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SNAC Resource ID: 7416336

US Naval Observatory, James M. Gilliss Library

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Lewis, Isabel Martin, 1881-

http://n2t.net/ark:/99166/w6rc0crv (person)