Nathan Keyfitz

Nathan Keyfitz is leader of the Populations Program at the International Institute for Applied Systems Analysis in Laxenburg, Austria. Wilhelm Flieger is director of the Office of Population Studies at the University of San Carlos in the Philippines.

Nathan Keyfitz is leader of the Populations Program at the International Institute for Applied Systems Analysis in Laxenburg, Austria. Wilhelm Flieger is director of the Office of Population Studies at the University of San Carlos in the Philippines. See less