Review Essay : Historical Demography in East Asia Population, Disease and Land in Early Japan, 645-900 William Wayne Farris Cambridge, Mass.: Council on East Asian Studies, Harvard University, and the Harvard-Yenching Institute, distributed by Harvard University Press, 1985. 235 pp. Family and Population in East Asian History Edited by Susan B. Hanley and Arthur P. Wolf Stanford, Calif.: Stanford University Press, 1985. 360 pp