Bilmes, along with Michelle Haefele and John Loomis, a postdoctoral fellow and a professor at Colorado State University respectively, estimate that NPS parks and programs are together worth about $92 billion.
linkBilmes, along with Michelle Haefele and John Loomis, a postdoctoral fellow and a professor at Colorado State University respectively, estimate that NPS parks and programs are together worth about $92 billion.
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