B̄oshoku k̄ogȳo kishuku joshi r̄od̄osha seikatsu j̄otai ch̄osa h̄okoku : Sh̄owa 23-nen 11-gatsu (R̄od̄osh̄o [Daijin Kanb̄o] R̄od̄o T̄okei Ch̄osakyoku[bu, 1949)