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