古地下水 (Chinese Wikipedia)

Analysis of information sources in references of the Wikipedia article "古地下水" in Chinese language version.

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1web.archive.org

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web.archive.org

Irrigation in Saudi Arabia (英文维基：沙特阿拉伯的灌溉系统). 2011-08-28 [2011-08-28]. （原始内容存档于2020-11-19）（英语）.

wikipedia.org

en.wikipedia.org

Irrigation in Saudi Arabia (英文维基：沙特阿拉伯的灌溉系统). 2011-08-28 [2011-08-28]. （原始内容存档于2020-11-19）（英语）.