Mathematics for geographers and planners / A. G. Wilson and M. J. Kirkby. Wilson, A. G. (Alan Geoffrey), 1939- Kirkby, M. J., joint author. Geography Mathematics. G70.23 .W55 526 WIM Includes index. Bibliography: p. [311]-316. Oxford : Clarendon Press, 1975. 1975. 1975 Text xiv, 325 p. ; eng Contemporary problems in geography