I. Some Extensions of the Existing Theory -- 1. Input Demand -- 2. Multiple Cost Uncertainty -- 3. Hedging -- II. Methodology and Applications -- 4. Introduction -- 5. Estimation under Production and Price Uncertainty -- 6. New Generalized Production Function -- 7. Multiple Uncertainty -- 8. Hedging: Empirical Analysis -- III. New Theory -- 9. Alternative Theory I -- 10. Alternative Theory II: Endogenous Theory -- 11. Alternative Theories of Hedging -- 12. A New Risk Aversion Definition -- 13. A New Risk Aversion Definition with Hedging -- 14. Multiple Alternative Theory