1. Comment on Spate;Crowe;Geographical Journal,1952
2. A random walk in terra incognita;Curry,2002
3. Cause and effect in human geography;Jones;Annals of the Association of American Geographers,1956
4. The necessity for determinism;Martin;Transactions, Institute of British Geographers,1951
5. Geography and the gerrymander;Sauer;American Political Science Review,1918