共 4 条
[2]
中国水资源公报[M]. 中国水利水电出版社 , 索丽生主编, 2005
[3]
Estimated Use of Water inthe United States in 2005. USGS. . 2009
[4]
FAO. http://www,fao.org/waicent/faoinfo/agricult//AGL/AGLW/aquastat/dbase/index.stm . 2003