Heisei 2-nen kokusei chōsa hōkoku. Dai 3-kan : dai 2-ji kihon shūkei kekka = 1990 population census of Japan. Volume 3 : results of the second basic complete tabulation
Heisei 2-nen kokusei chōsa hōkoku. Dai 6-kan, Jūgyōchi tsūgakuchi shūkei kekka = 1990 population census of Japan. Volume 6, Results of tabulation on place of work or schooling
Heisei 2-nen kokusei chōsa hōkoku. Dai 4-kan, Dai 3-ji kihon shūkei kekka = 1990 population census of Japan. Volume 4, Results of the second basic complete tabulation
Census Advisory Committees of the American Statistical Association, on Population Statistics, of the American Marketing Association, and of the American Economic Association