1. Conceptual Models in Exploration Geochemistry — The Canadian Cordillera and Canadian Shield,1975
2. A basis for geochemical exploration models for tropical terrains;Butt;Chem. Geol.,1987
3. Geochemical exploration problems in Western Australia, exemplified by the Mt. Keith area;Butt,1975
4. Conceptual Models in Exploration Geochemistry — Australia,1980