168.6K
http://unstats.un.org/unsd/geoinfo/UNGEGN/docs/25th-gegn-docs/wp%20papers/wp45-item10-china.pdf
unstats.un.org
全网免费
http://secnet087.un.org/unsd/geoinfo/UNGEGN/docs/25th-gegn-docs/wp%20papers/wp45-item10-china.pdf
secnet087.un.org
全网免费
http://mdgs.un.org/unsd/geoinfo/UNGEGN/docs/25th-gegn-docs/wp%20papers/wp45-item10-china.pdf
mdgs.un.org
全网免费