" ITC Publication No. 7. Edited by A. M. J. MEIJERINK, C. R. VALENZUELA and A. STEWART. (Enschede: International Institute for Aerospace Survey and Earth Sciences (ITC), 1988.) [Pp. 115.] Price Dfl.20·00.
Darius BartlettPublished in: Int. J. Geogr. Inf. Sci. (1989)