Value of the Ecosystem Services in the Heihe River Basin
ZHANG Zhi-qiang, XU Zhong-min, WANG Jian, CHENG Guo-dong
JOURNAL OF GLACIOLOGY AND GEOCRYOLOGY . 2001, (4): 360 -366 .  DOI: 10.7522/j.issn.1000-0240.2001.0065

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