Columbia subject headings:
Infrared telescopes--Congresses.
Low temperatures--Congresses.
Optical instruments--Congresses.
Harvard subject headings:
Princeton subject headings:
Astronautics in astronomy--Congresses.
Infrared telescopes--Congresses.
Low temperature engineering--Congresses.
Low temperatures--Congresses.
Optical instruments--Congresses.
Space optics--Congresses.