scholarly journals Comparing environmental values across major U.S. national parks

Author(s):  
D. B. Rideout ◽  
P. S. Ziesler ◽  
Y. Wei
2016 ◽  
Author(s):  
Qiaolian Cheng ◽  
Kexin Liu ◽  
Ruijin Zhang ◽  
Guofeng Li ◽  
Jingjing Wang

10.3133/gip69 ◽  
2008 ◽  
Author(s):  
Philip W. Stoffer
Keyword(s):  

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