University of Houston, USA
Louis H. Stern
University of California Los Angeles, USA
W. A. V. Clark
The University of Arizona, Tucson, USA
Lay James Gibson
University of Washington, USA
Claus D. Gehner & Thaddeus H. Spratlen
N.I.S.E.R., University of Ibadan, Nigeria
A. G. Onokerhoraye
Louisiana State University, Baton Rouge, USA
Roger L. Burford & James A. Richardson
Oregon State University, USA
Jeanne Dost
University of British Columbia, Canada
Michael A. Goldberg
University of Nevada, Las Vegas, USA
Bernard Malamud
Centre Démographique ONU-Roumanie Bucharest, Rumania
Henry G. J. Knoop
Western Washington State College, USA
Ben Frerichs
University of Regina, Canada
Alexander H. Paul
Stockholm School of Economics, Sweden
Claes -Fredrik Claeson