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On the homogeneous structure found in the system of the population of cities in Japan.

The author applies Auerbach and Zipf's rank-size rule for the population of cities to data for the nine regions of Japan for 1960, 1965, 1970, and 1975. The rule is successfully applied, and the author concludes that "the system of population of cities in Japan was so homogeneous that the distribution of the population in cities in each of the regions of this country could be described by this same rank-size rule." Some theoretical considerations concerning the rank-size rule are also discussed. (summary in JPN)