南京林业大学学报（自然科学版）
Effects on Slope Cropland Site and Site Classification of Guizhou Karst Upland
ZHANG Xi
JOURNAL OF NANJING FORESTRY UNIVERSITY . 2003, (06): 98 -102 .  DOI: 10.3969/j.jssn.1000-2006.2003.06.024

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