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Problems and Countermeasures of the NaturalForest Protection Program in Sichuan Province
FENG Liang, XIAO Jiancai, YANG Hongzhong, ZHOU Fukang
Forest and Grassland Resources Research . 2008, (4): 4 -8 .  DOI: 10.3969/j.issn.1002-6622.2008.04.002