Columbia subject headings:
F stars--Spectra.
G stars--Spectra.
K stars--Spectra.
Stars--Spectra.
Harvard subject headings:
F stars--Spectra.
G stars--Spectra.
K stars--Spectra.
Stars--Spectra
Princeton subject headings:
F stars--Spectra.
G stars--Spectra.
K stars--Spectra.
Stars--Spectra.