PDF(255 KB)
A study on ways and benefit of farmland irrigation in plain of the Yellow river, Huai river and Sea river
LI Qing-chao, ZHANG Er-xun
GEOGRAPHICAL RESEARCH ›› 1999, Vol. 18 ›› Issue (3) : 305-311.
PDF(255 KB)
PDF(255 KB)
A study on ways and benefit of farmland irrigation in plain of the Yellow river, Huai river and Sea river
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