共 9 条
[6]
中国中长期食物发展战略[M]. 农业出版社 , 卢良恕,刘志澄主编, 1993
[7]
北京市统计年鉴[M]. 中国统计出版社 , 北京市统计局编, 1983
[8]
Water footprints of nations: Water use by people as a function of their consumption pattern[J] . A. Y. Hoekstra,A. K. Chapagain.Water Resources Management . 2007 (1)
[9]
北京市水资源公报. 北京市水文总站. . 2006