PDF(378 KB)
Study on the Influencing Factors of Grain Production in Hebei Province Based on Gray Correlation Degree Method
WANG Shu-tao,LI Xin-wang,MEN Ming-xin,XU Hao
PDF(378 KB)
PDF(378 KB)
Study on the Influencing Factors of Grain Production in Hebei Province Based on Gray Correlation Degree Method
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