This standard is applicable to the overall planning work and the urban land use statistics work of the city in the city.
GBJ 137-1990 history
2010GB 50137-2011 Code for classification of urban land use and planning standards of development land
1991GBJ 137-1990 Standard for classification of urban land and for planning of constructional land
GBJ 137-1990 Standard for classification of urban land and for planning of constructional land was changed to GB 50137-2011 Code for classification of urban land use and planning standards of development land.