Comparing environmental values across major U.S. national parks
D. B. Rideout
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P. S. Ziesler
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Y. Wei
2017 ◽
Vol 59
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pp. 123-127
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Edmund Goh
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Brent Ritchie
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Jie Wang
Jelle Boeve-De Pauw
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Peter Van Petegem
Qiaolian Cheng
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Kexin Liu
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Ruijin Zhang
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Guofeng Li
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Jingjing Wang
2011 ◽
Vol 17
(1)
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pp. 21-23
C. Zambrano
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S. Jinbao
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V. Juan Lara
1997 ◽
Vol 9
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pp. 203-204