by Roy R. Silen
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Genetics of Douglas-fir
Cooling a Douglas-fir seed orchard to av...
Silvical characteristics of Oregon white...
Inheritance of stockiness in ponderosa p...
A pioneer exotic tree search for the dou...
A simple, progressive, tree improvement ...
British Arboretum
Poison Ivy's deadly garden
Performance records of woody plants in t...
The arboretums and botanical gardens of ...
Public gardens and arboretums of the Uni...
Inventory of living collections