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
Census Advisory Committees of the American Statistical Association, on Population Statistics, of the American Marketing Association, and of the American Economic Association
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