Book review: Foot,D. 1981: Operational urban models: an introduction. London: Methuen. xviii + 231 pp. £12.00 cloth,£5.95 paper

Bennett, RJ 1981: Statistical forecasting. Concepts and techniques in modern geography No. 28. Norwich: Geo Abstracts .

Haggett, P. , Cliff, A.D. and Frey, A.E. 1977: Locational analysis in human geography. (Second edition.) London: Edward Arnold .

Senior, M.L. 1979: From gravity modelling to entropy maximising: a pedagogic guide. Progress in Human Geography 3, 175-210.

Thomas, R.W. and Huggett, RJ 1980: Modelling in geography: a mathematical approach . London: Harper and Row.

Wilson, A.G. 1981: Geography and the environment: systems analytical methods . Chichester: John Wiley .

Wilson, A.G. and Kirkby, MJ 1980: Mathematics for geographers and planners. (Second edition,) Oxford: Oxford University Press .