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Add 1 book for Wikipedia:Pemastian (20210209)) #IABot (v2.0.8) (GreenC bot |
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Baris 57:
| first = Kenneth | last = Seidelmann
| title = Explanatory supplement to the astronomical almanac
| url = https://archive.org/details/explanatorysuppl00pken | publisher = University Science Books
| year = 2006
| isbn = 1-891389-45-9}}
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