An edition of When to pick pine cones (1940)
When to pick pine cones
By Lake States Forest Experiment Station (Saint Paul, Minn.)
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Publish Date
1940
Publisher
Lake States Forest Experiment Station, University Farm
Language
eng
Pages
-
Description:
subjects: Pine cones, Seed cones, Pinus banksiana, Pinus strobus, Pinus resinosa, Specific gravity, Harvesting