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j w bruce wagg
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Artificial seeding of pine in central Oregon
J. W. Bruce Wagg · Forest Research Laboratory, Oregon State University
47 sayfa · 1962
Douglas fir / Ponderosa pine / Reforestation / Seeds / Sowing
Spot seeding
J. W. Bruce Wagg · State of Oregon, Forest Lands Research Center
19 sayfa · 1958
Diseases and pests / Germination / Jeffrey pine / Pines / Ponderosa pine