Gregory, S. Statistical methods and the geographer / S. Gregory. - 4th ed. - London: Longman, 1978. - xv, 240 p. : graphs ; 22 cm. - Geographies for advanced study . - Geographies for advanced study . Previous ed.: 1973. Includes indexes. Bibliography: p. 229-234. ISBN: 0582481864 LCCN: 77-7025 Subjects--Topical Terms: Geography--Statistical methods.