Columbia subject headings:
Cosmic dust--Congresses.
Infrared spectra--Congresses.
Interstellar matter--Congresses.
Molecular spectra--Congresses.
Harvard subject headings:
Astronomical spectroscopy--Congresses
Cosmic dust--Congresses.
Cosmic dust--Optical properties--Congresses.
Infrared astronomy--Congresses.
Infrared spectroscopy--Congresses.
Princeton subject headings:
Astronomical spectroscopy--Congresses.
Cosmic dust--Optical properties--Congresses.
Infrared spectroscopy--Congresses.