1![How Time Balls Worked Featuring The Cincinnati Observatory Birthplace for American Astronomy How Time Balls Worked Featuring The Cincinnati Observatory Birthplace for American Astronomy](https://www.pdfsearch.io/img/eb7ee8a56c0cb3cdbecc371859954829.jpg) | Add to Reading ListSource URL: www.cincinnatiobservatory.orgLanguage: English - Date: 2015-04-14 08:14:27
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2![Dream Big - Read / Own the Night / Between the Covers 2012 SRP community partner prospects - Ohio observatories and planetariums (and a few other ideas for “Night” programs) This is a list of Ohio establishments that Dream Big - Read / Own the Night / Between the Covers 2012 SRP community partner prospects - Ohio observatories and planetariums (and a few other ideas for “Night” programs) This is a list of Ohio establishments that](https://www.pdfsearch.io/img/1bbea549465083d8eba5f88f712333be.jpg) | Add to Reading ListSource URL: www.library.ohio.govLanguage: English - Date: 2014-08-20 07:12:57
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3![Dream Big - Read / Own the Night / Between the Covers 2012 SRP community partner prospects - Ohio observatories and planetariums (and a few other ideas for “Night” programs) This is a list of Ohio establishments that Dream Big - Read / Own the Night / Between the Covers 2012 SRP community partner prospects - Ohio observatories and planetariums (and a few other ideas for “Night” programs) This is a list of Ohio establishments that](https://www.pdfsearch.io/img/7fdc38a3b66720fd93ad429e6424c97d.jpg) | Add to Reading ListSource URL: library.ohio.govLanguage: English - Date: 2014-08-20 07:12:57
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4![national academy of sciences Paul Herget 1908—1981 national academy of sciences Paul Herget 1908—1981](https://www.pdfsearch.io/img/8a9e721c611b357b5e7d7db4e57e97cb.jpg) | Add to Reading ListSource URL: www.nasonline.orgLanguage: English - Date: 2012-07-18 15:09:20
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5![](https://www.pdfsearch.io/img/173243adfe06e3001d43a4a2fc2814d0.jpg) | Add to Reading ListSource URL: books.nap.eduLanguage: English - Date: 2009-07-09 06:54:52
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