D. F. Roy

发表

Douglas-Fir seed production and dispersal in northwestern California.

D. F. Roy, 1960 .

Regeneration of Douglas-fir in the Klamath Mountains region, California and Oregon

D. F. Roy, R. Strothmann, 1984 .

Deer browsing and Douglas-Fir seedling growth in northwestern California.

D. F. Roy, 1960 .

Silvical characteristics of Monterey Pine (Pinus radiata D.Don).

D. F. Roy, 1966 .

Hardwood sprout measurements in northwestern California.

D. F. Roy, D. F. Roy, 1955 .