Mutsuzawa-mura(12422) is changed to Mutsuzawa-machi(12422) in Chosei-gun.

睦沢村(12422)が睦沢町(12422)に町制施行

278

http://data.e-stat.go.jp/lod/terms/sacs#CodeChangeEvent

http://data.e-stat.go.jp/lod/sac/C12422-19790901

http://data.e-stat.go.jp/lod/sac/C12422-19830401

http://data.e-stat.go.jp/lod/sacr/changesToTown

1983-04-01 ^^http://www.w3.org/2001/XMLSchema#date