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Pattern of Picea schrenkiana var. tianschanica Forest in the middle of Tianshan Mountains under Two
【机 构】
：
Department of Landscape Architecture ,Beijing Agricultural College ,102206 ,P.R.China
【出 处】
：
第三届世界生态高峰会(Eco Summit 2007)
【发表日期】
：
2007年12期
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