Columbia subject headings:
Harvard subject headings:
Plasma (Ionized gases)--Congresses.
Plasma spectroscopy--Congresses.
Ultraviolet spectroscopy--Congresses.
X-ray spectroscopy--Congresses
Princeton subject headings:
Plasma spectroscopy--Congresses.
Ultraviolet spectroscopy--Congresses.
X-ray spectroscopy--Congresses.