Smart, W.M. . Textbook on Spherical Astronomy / Textual Documents W.M.Smart. - 6th ed. / - New Delhi : Vikas Publishing House Pvt. Ltd. , 1977. - 419p. ; 22cm. Subjects--Index Terms: Spherical Astronomy Astronomy G-Astronomy Dewey Class. No.: 522.7 / Sm 29 T