Green fire : Aldo Leopold and a land ethic for our time / by Docuseek, United States. Forest Service, Aldo Leopold Foundation, Bullfrog Films, Center for Humans and Nature

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On nature's terms : people and predators co-existing in harmony / by Docuseek, Wildlife Network (Calif.), WildFutures (Organization), Earth Island Institute, Bullfrog Films

Subjects: “…Wildlife conservation United States.…”
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Monumental : David Brower's fight for wild America / by Docuseek, Bullfrog Films, Loteria Films

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David Brower : a conversation with Scott Simon / by Docuseek, KCTS (Television station : Seattle, Wash.), Bullfrog Films

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A sense of wonder : two interviews with Rachel Carson / by Docuseek, Bullfrog Films, Sense of Wonder Productions

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Everything's cool / by Docuseek, Bullfrog Films, Lupine Films, Toxic Comedy Pictures

Subjects: “…Climatic changes Government policy United States.…”
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Peacock's war by Docuseek, Bullfrog Films, Earthwise Entertainment

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For earth's sake : the life and times of David Brower / by Docuseek, KCTS (Television station : Seattle, Wash.), Bullfrog Films

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A naturalist in the rainforest : Alexander Skutch / by Docuseek, Paul Feyling Productions, Bullfrog Films

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Symbiotic earth : how Lynn Margulis rocked the boat and started a scientific revolution / by Docuseek

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A sidewalk astronomer / by Docuseek

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A life among whales / by Docuseek, Uncommon Productions, Bullfrog Films

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Twixt heaven and Earth / by Docuseek

Subjects: “…Environmental protection United States.…”
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Lunch love community / by Docuseek, Thirty Leaves (Firm), Media Working Group (Firm), Bullfrog Films

Subjects: “…Food supply United States.…”
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Varmints / by Docuseek

Subjects: “…Prairie dogs Government policy United States.…”
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The God squad and the case of the northern spotted owl by Docuseek, Bullfrog Films

Subjects: “…United States. Endangered Species Act of 1973.…”
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America's lost landscape the tallgrass prairie / by Docuseek, Bullfrog Films, New Light Media

“…United States History 19th century.…”
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Facing the storm : story of the American bison / by Docuseek

“…United States High Plains. fast (OCoLC)fst01241976…”
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