Columbia subject headings:
Astronomical instruments--Congresses.
Imaging systems--Congresses.
Optical instruments--Congresses.
Remote sensing--Congresses.
Spectrum analysis--Congresses.
Harvard subject headings:
Astronomical instruments--Congresses
Imaging systems--Congresses
Optical instruments--Congresses
Remote sensing--Congresses.
Spectrum analysis--Congresses
Princeton subject headings:
Astronomical instruments--Congresses.
Imaging systems--Congresses.
Optical instruments--Congresses.
Remote sensing--Congresses.
Spectrum analysis--Congresses.