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File:Refractor Cincinnati observatory.jpg
来自维基百科,自由的百科全书
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File:Refractor Cincinnati observatory.jpg
cincinnatiobservatory.org - Merz und Mahler 11"
Refractor
Transferred from en.wikipedia to Commons. The original description page was here. All following
File:The story of the sun, moon, and stars (1898) (14592211760).jpg
ardor, there are
observatories
of more orless importance,—the National
Observatory
at Wash-ington, D. C.; the
Cincinnati
Observatory
, projectedby the