A study on the spatial difference of farmland nitrogen nutrient budget in the Bohai Rim region, China
GUO Liying, YANG Ren, WANG Daolong
地理学报(英文版) ›› 2012, Vol. 22 ›› Issue (4) : 761-768.
A study on the spatial difference of farmland nitrogen nutrient budget in the Bohai Rim region, China
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