Columbia subject headings:
Harvard subject headings:
Remote sensing--Equipment and supplies--Congresses.
Ultraviolet radiation--Industrial applications--Congresses.
Ultraviolet radiation--Instruments--Congresses.
Ultraviolet radiation--Remote sensing--Congresses.
Upper atmosphere--Remote sensing--Congresses.
Princeton subject headings:
Atmosphere--Remote sensing--Instruments--Congresses.
Remote sensing--Congresses.
Ultraviolet radiation--Instruments--Congresses.