Part I: Regional Control of Spatially Structured Epidemics.- Regional Control for a Class of Spatially Structured Epidemics.- Controlling the Spread of a Vector-Borne Epidemic: The Case of Malaria.- Part II: Optimal Harvesting.- Optimal Harvesting: Space Dependence.- Optimal Harvesting: Age Dependence.- Part III: Controlling Epidemics in Agriculture.- Controlling Xyllela fastidiosa.- Controlling an Epidemic in Agriculture by Predators.- Part IV: Controlling Environmental Pollution in Geographical Economics.- Appendix A: Special Topics for Integro-Differential Equations.- Appendix B: Essentials of Numerical Methods.<br>