Paul J. Birzins
2 publications by Paul J. Birzins:
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Evaluation of Six Weed Control Treatments in an Interior Spruce Seed Orchard
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Publication: Tree Planters' Notes - Volume 34, Number 1 (1983)
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Relationship Between Filled Seeds Per Halfcut and Filled Seeds Per Cone in Interior Spruce
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Publication: Tree Planters' Notes - Volume 33, Number 2 (1982)
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