Introduction, By I.a. Mclaren.--meaning Of Density-dependence And Related Terms In Population Dynamics, By M.e. Solomon.--is The Density Of Animal Populations Regulated By Mechanisms Or By Chance? By F. Schwerdtfeger.--status Of The Idea That Weather Can Control Insect Populations, By M.e. Solomon.--regulation Of Animal Numbers: A Model Counter-example, By H.s. Horn.--effects Of Population Density On Growth Rates Of Animal Populations, By J.t. Tanner.--endocrines, Behavior, And Population, By J.j. Christian And D.e. Davis.--self-regulating Systems In Populations Of Animals, By V.c. Wynne-edwards.--on Group Selection And Wynne-edwards' Hypothesis, By J.a. Wiens.--the Natural Selection Of Self-regulatory Behavior In Animal Populations, By D. Chitty.--population Regulation And Genetic Feedback, By D. Pimentel.