R. G. Mitchell

No biography available.

Works (4)

Cover of Damage by the Sitka spruce weevil (Pissodes strobi) and growth patterns for 10 spruce species and hybrids over 26 years in the Pacific Northwest

Damage by the Sitka spruce weevil (Pissodes strobi) and growth patterns for 10 spruce species and hybrids over 26 years in the Pacific Northwest

Cover of Infestation characteristics of the balsam woolly aphid in the Pacific Northwest

Infestation characteristics of the balsam woolly aphid in the Pacific Northwest

Cover of Balsam woolly aphid

Balsam woolly aphid

Cover of Estimation of needle populations on young, open-grown Douglas-fir by regression and life table analysis

Estimation of needle populations on young, open-grown Douglas-fir by regression and life table analysis