Chang, Kang-Tsung Introduction to geographic information systems / Kang-tsung Chang. - Seventh edition. - xviii,425p. : ill. 23 cm. Includes index. ISBN: 9781259010613 LCCN: 2012036462 Subjects--Topical Terms: Geographic information systems. LC Class. No.: G70.212 / .C47.35 2014 Dewey Class. No.: 910.285