
Specification for surveying and mapping of 1∶5 000 1∶10 000 and 1∶25 000 topographic maps of coastal zone
标准号:CH/T 7001-1999
Specification for surveying and mapping of 1∶5 000 1∶10 000 and 1∶25 000 topographic maps of coastal zone
标准号:CH/T 7001-1999