Essays in Multistate Mathematical Demography

The papers in this special issue of "Environment and Planning A" were first presented at the session on mathematical demography held at the 1979 Annual Meeting of the Population Association of America in Philadelphia, 26-28 April. They are representative examples of work currently under way in a relatively new branch of mathematical demography becoming known as multistate demography. The authors come from diverse backgrounds and represent different countries. Philip Rees is British and a lecturer in the School of Geography at the University of Leeds in England; Jacques Ledent is French and is a research scholar at the International Institute for Applied Systems Analysis in Laxenburg, Austria; Frans Willekens, a Belgian, is Research Director at Mens en Ruimte in Brussels; Kao-Lee Liaw is Canadian and teaches geography at McMaster University in Hamilton, Ontario; and Nathan Keyfitz of the USA, is Andelot Professor of Sociology at Harvard University in Cambridge, Massachusetts