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1Published 2008Subjects: “...Nature trails Conservation and restoration Oregon Tillamook....”
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2by Langston, NancySubjects: “...Nature Effect of human beings on Oregon Malheur National Wildlife Refuge....”
Published 2003
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3Published 2013Subjects: “...Nature conservation Deer Flat National Wildlife Refuge (Idaho and Or.)...”
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4Published 2012Subjects: “...Nature conservation Oregon Nestucca Bay National Wildlife Refuge....”
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5by Schuller, ReidSubjects: “...Research natural areas Oregon Little Sink Research Natural Area....”
Published 2007
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6by Schuller, ReidSubjects: “...Research natural areas Oregon Grass Mountain Research Natural Area....”
Published 2007
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7by Schuller, ReidSubjects: “...Research natural areas Oregon Forest Peak Research Natural Area....”
Published 2007
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8Published 1980Subjects: “...Natural areas Law and legislation United States....”
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9Published 1997Subjects: “...Natural areas Oregon Management....”
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10by Schuller, ReidSubjects: “...Plant communities Oregon Forest Creeks Research Natural Area....”
Published 2010
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11by Schuller, ReidSubjects: “...Plant communities Oregon Woodcock Bog Research Natural Area....”
Published 2010
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12by Schuller, ReidSubjects: “...Plant communities Oregon Fox Hollow Research Natural Area....”
Published 2013
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13by Schuller, ReidSubjects: “...Research natural areas Oregon Saddle Bag Mountain Research Natural Area....”
Published 2007
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14by Greene, Linda W.Subjects: “...Natural history Oregon....”
Published 1984
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15Published 1871Subjects: “...Natural resources Oregon....”
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16Published 1979Subjects: “...Conservation of natural resources....”
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17Published 1963Subjects: “...Conservation of natural resources....”
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18Published 1969Subjects: “...Conservation of natural resources....”
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19by Blair, BowenSubjects: “...Nature conservation Columbia River Gorge (Or. and Wash.)...”
Published 2022
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20Subjects: “...Research natural areas Oregon Grayback Glades Research Natural Area....”
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