A study of decay in Douglas fir in the Pacific northwest.
Boyce, John Shaw.
A study of decay in Douglas fir in the Pacific northwest. By J.S. Boyce. - Washington, Govt. print. off., 1923. - 20 p. viii pl. on 4 l. 23 cm. - U.S. Dept. of agriculture. Department bulletin no. 1163 .
Contribution from Bureau of plant industry. "Literature cited": p. 19.
agr23001222
Douglas fir--Diseases and pests.
SB608.F4 / B6
A study of decay in Douglas fir in the Pacific northwest. By J.S. Boyce. - Washington, Govt. print. off., 1923. - 20 p. viii pl. on 4 l. 23 cm. - U.S. Dept. of agriculture. Department bulletin no. 1163 .
Contribution from Bureau of plant industry. "Literature cited": p. 19.
agr23001222
Douglas fir--Diseases and pests.
SB608.F4 / B6