emeritus professor of geography at University of Colorado, Boulder, Colorado

Chancellor's Professor of Demography, University of California, Berkeley

Professor, Department of Population Science and Human Resource Development, Rajshahi …

CUNY School of Public Health & CUNY Institute for Demographic Research

Department of Statistics, Banaras Hindu University, Varanasi

Tokyo Gakugei University

University of Zimbabwe

Associate Professor, Fudan University

Texas Tech University

Professor of Statistics, Utkal University