2009LD/T 72.2-2008 Construction Engineering Labor QuotaConstruction Engineering-Artificial Earthwork Engineering
1970LD/T 99.3-1997 Municipal engineering labor quota earthwork engineering
LD/T 99.3-1997 Municipal engineering labor quota earthwork engineering was changed to LD/T 72.2-2008 Construction Engineering Labor QuotaConstruction Engineering-Artificial Earthwork Engineering.