2005DB13/T 157-2005 "Surrounding the mountains" and supporting engineering construction technical specifications
1993DB13/T 157.1-1993 Basic Requirements for the Construction of "Surrounding the Mountains" Project
DB13/T 157.1-1993 Basic Requirements for the Construction of "Surrounding the Mountains" Project was changed to DB13/T 157-2005 "Surrounding the mountains" and supporting engineering construction technical specifications.