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× Forest reserves
来源:U.S. Department of Agriculture, National Agricultural Library contributed to BHL , no.335b卷 , 1997
作者:Tongass National Forest (Agency : U.S.).@@Tongass National Forest (Agency : U.S.).
关键词:Alaska;Logging, Skyline;...
使用许可:Unknown
来源:U.S. Department of Agriculture, National Agricultural Library contributed to BHL , no.374b卷 , 1999
作者:Tongass National Forest (Agency : U.S.).@@Tongass National Forest (Agency : U.S.).
关键词:Forest management;Alaska;...
使用许可:Unknown
3 Impacts of backcountry recreation : site management and rehabilitation : an annotated bibliography / [期刊论文]
来源:U.S. Department of Agriculture, National Agricultural Library contributed to BHL , no.121卷 , 1981
作者:DAVID N. COLE @@EDWARD G. S. SCHREINER
关键词:Bibliography;United States;...
使用许可:Unknown
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