This volume constitutes the Proceedings of the "Nonlinear Dynamics in Economics and Social Sciences" Meeting held at the Certosa di Pontignano, Siena, May 27-30, 1991. The meeting welcomed contributions from economists interested in developing a new mathematical approach to the modelling of economical processes and mathematicians active in the field of globaldynamical systems theory. The aim of the conference was the one of focusing on the applications of analythical methods which are now commonly referred to the popular label of "chaotic dynamics" in the social sciences domain, and hence to...