Columbia subject headings:
Lodgepole pine--Diseases and pests--Control.
Mountain pine beetle--Control.
Ponderosa pine--Diseases and pests--Control.
Solar radiation.
Harvard subject headings:
Lodgepole pine--Diseases and pests--Control.
Mountain pine beetle--Control.
Ponderosa pine--Diseases and pests--Control.
Solar radiation.
Princeton subject headings: