Category:A treatise on astronomy, in which the elements of the science are deduced in a natural order, from the appearances of the heavens to an observer on the earth; demonstrated on mathematical principles
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Media in category "A treatise on astronomy, in which the elements of the science are deduced in a natural order, from the appearances of the heavens to an observer on the earth; demonstrated on mathematical principles"
The following 13 files are in this category, out of 13 total.