Columbia subject headings:
Harvard subject headings:
Environmental protection--Tahoe, Lake, Region (Calif. and Nev.)
Regional planning--Tahoe, Lake, Region (Calif. and Nev.)
Tahoe, Lake, Region (Calif. and Nev.)--History.
Princeton subject headings:
Environmental protection--Tahoe, Lake, Region (Calif. and Nev.).
Regional planning--Tahoe, Lake, Region (Calif. and Nev.).
Tahoe, Lake, Region (Calif. and Nev.)--History.