898 resultados para PD control
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Literature cited: p. 24.
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Mode of access: Internet.
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Cover title.
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Includes bibliographical references (p. 36-38).
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Literature cited: p. 44-45.
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Bibliography: p. 41-44.
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Issued Nov. 1976.
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Issued May 1977.
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Issued Nov. 1979.
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Issued July 1980.
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May 10, 1978.
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Includes bibliographical references (p. 159-166).
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"Literature cited": p. 157-164.
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Contribution from Forest Service.
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"Issued August 1958."