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Gang Wu, Xiao Fu and Hong-Bo Shao, 2007. Emergy Evaluation of Two Agricultural Systems with Different Economic Surroundings in Liaoning Province of Northeast China. International Journal of Agricultural Research, 2: 559-570.
DOI: 10.3923/ijar.2007.559.570
URL: https://scialert.net/abstract/?doi=ijar.2007.559.570
DOI: 10.3923/ijar.2007.559.570
URL: https://scialert.net/abstract/?doi=ijar.2007.559.570