1. Elementary Differential Equations and Boundary Value Problems;Boyce,1986
2. Man versus pests;Conway,1976
3. Pest and Pathogen Control: Strategic, Tactical. and Policy Models;Conway,1984
4. Principles for the control of arthropod pests;Geier;Protection Ecology,1983
5. Application of the economic threshold for interseasonal pest control;Hall;West Journal of Agricultural Economics,1985