Differences in Cone Numbers, Lengths, and Cut-Counts in the Crowns of Young Open-Grown Douglas-Fir

Author： Winjum Jack K. Johnson Norman E.

Publisher： Society of American Foresters

ISSN： 0022-1201

Source： Journal of Forestry, Vol.62, Iss.6, 1964-06, pp. : 389-391

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