Insect damage to the 1954 crop of Douglas-fir and sugar pine cones and seeds in northern California
By: by Ralph C. Hall
Series: Miscellaneous paper / California Forest and Range Experiment Station -- no. 18; Miscellaneous paper (California Forest and Range Experiment Station) -- no. 18.
Publisher: California Forest and Range Experiment Station
Published: 1955
Place of publication: Berkeley, Calif
Language: eng
Subjects: Insect pests; Trees; Diseases and pests
Notes: Caption title.

"January 20, 1955."