Truran, H. C. A practical guide to statistical maps and diagrams / H. C. Truran. - London : Heinemann Educational, 1975. - [4], 60 p. : ill. (some col.), maps ; 25 cm. Includes bibliographical references. ISBN: 0435348957 Subjects--Topical Terms: Statistical maps.Statistics--Graphic methods. LC Class. No.: GA109.8