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A manual of spherical and practical astronomy, embracing the general problems of spherical astronomy, the special applications to nautical astronomy, and the theory and use of fixed and portable astronomical instruments. With an appendix on the method of least squares. Volume 1. Spherical astronomy / by William Chauvenet. - 5th ed., revised and corrected. - Philadelphia : J.B. Lippincott Company, 1887. - 708 p. - (University edition).