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<p>Bibliography: p. 11-12
<br>Subjects: Ponderosa pine Growth; Pine Black Hills (S; D; and Wyo; )
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Ponderosa pine Thinning</div>
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<dl><dd>Van Deusen, James L</dd>
<dd>Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.)</dd></dl></div>
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