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Touring the Trumpler Classes By Richard Harshaw Saguaro Astronomy Club Phoenix, Arizona Robert Trumplerwas a Swiss astronomer (he became a naturalized American citizen in
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Document Date: 2009-10-16 09:19:55
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Touring the Trumpler Classes By Richard Harshaw Saguaro Astronomy Club Phoenix, Arizona Robert Trumplerwas a Swiss astronomer (he became a naturalized American citizen in