Machine derived contents note: Overview of Models.- Some Applications.- Basic Methodology for Single Population Stochastic Models.- Linear Immigration-Death Model.- Linear Birth-Immigration-Death Model.- Nonlinear Birth-Death Model.- A Nonlinear Birth-Immigration-Death Model.- Comparisons Among Single Population Growth Models.- Basic Methodology for Multiple Population Stochastic Models.- Linear Migration Models.- Basic Linear Growth Models.- Generalized Linear Growth Models.- Nonlinear Growth Models