Arny, Thomas, Explorations: introduction to astronomy / Thomas Arny, Stephen Schneider. - 9th ed. - New York : McGraw Hill, c2019. - xxviii, 570p. col. ill. Includes index. ISBN: 978-1-260-56589-8 Subjects--Topical Terms: Astronomy Dewey Class. No.: 520 Ar768 2020