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Zoology (30)
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Forest fires -- Prevention and control (8)
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Peromyscus -- Oregon -- McDonald Forest (1)
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Reclamation Act of 1902 (1)
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Tillamook Burn, Or., 1933 (1)
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United States. -- National Industrial Recovery Act of 1933 (1)
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Use "-" before a word or phrase to exclude.
Use "OR", "AND", and "NOT" to create complex boolean logic. You can use parentheses in your complex expressions.
Truncation and wildcards are not supported - word-stemming is done automatically.