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>On the Comparision between the Observed Declinations and Proper Motions of Star-Pairs for 1928.0 used for the North International Latitude Service during the Period 1922.7-31.0 and those of Boss' General Catalogue for 1950.0
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On the Comparision between the Observed Declinations and Proper Motions of Star-Pairs for 1928.0 used for the North International Latitude Service during the Period 1922.7-31.0 and those of Boss' General Catalogue for 1950.0