- World Regional Geography: A Development Approach
- Land Degradation: Creation and Destruction (The Natural Environment)
- Cultural Encounters with the Environment
- World Regional Geography: A Development Approach, Books a la Carte Edition; Modified Mastering Geography with Pearson eText -- ValuePack Access Card ... A Development Approach (11th Edition)
- The nature of nomadism;: A comparative study of pastoral migrations in southwestern Asia and northern Africa, (University of Chicago. Dept. of Geography. Research paper no. 118)