Geograf - geografia ekonomiczna.

Locational analysis in human geogarphy / Peter Haggett, Andrew D. Cliff, Allan Frey. - 2nd ed. - London, 1977. (Christ's College, Cambridge)

LCA online

http://www.geog.cam.ac.uk/people/cliff/

World atlas of epidemic diseases / Andrew Cliff, Peter Haggett, Matthew Smallman-Raynor. - London, 2004.