£11.99
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A catalogue of standard polar and clock stars,
Truman Henry Safford
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£16.95
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£16.95
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A Discourse Read June 25, 1888 to Commemorate the Fiftieth Anniversary of the Dedication of the Hopkins Observatory of Williams College
Truman Henry Safford
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£15.95
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Mathematical Teaching and It's Modern Methods
Truman Henry Safford
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Catalogue of the Mean Declination of 2018
Truman Henry Safford
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£44.95
£43.25
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