P. E. Hoekstra
3 publications by P. E. Hoekstra:
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Stimulation of Flower and Seed Production in Slash Pine
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Publication: Tree Improvement and Genetics - Southern Forest Tree Improvement Conference - 1957
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Problems Involved in the Control of Cone Insects by Aerial Spraying
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Publication: Tree Improvement and Genetics - Southern Forest Tree Improvement Conference - 1959
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Tree-Raising Succeeds on Barren Sand Tracts
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Publication: Tree Planters' Notes - Issue 48 (1961)
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