1. Introduction -- 1.1. Types and uses of models -- 1.2. Simulation models -- 1.3. The development of population models ….4. The simulation of Hutterite fertility -- 5. The Effects on Fertility of Breastfeeding and Sexual Abstinence -- 5.1. The … -- 5.4. The simulation of Yoruba fertility -- 6. The Physiological Relationship between Fertility and Infant and Child …