Columbia subject headings:
Forest insects--Great Basin--Periodicals.
Forest insects--Rocky Mountains Region--Periodicals.
Trees--Diseases and pests--Great Basin--Periodicals.
Trees--Diseases and pests--Rocky Mountains Region--Periodicals.
Harvard subject headings:
Forest insects--Great Basin--Periodicals.
Forest insects--Rocky Mountains Region--Periodicals.
Trees--Diseases and pests--Great Basin--Periodicals.
Trees--Diseases and pests--Rocky Mountains Region--Periodicals.
Princeton subject headings: