Non-solar x- and gamma-ray astronomy, edited by L. Gratton.
X-ray spectroscopy -- Congresses.
Gamma ray astronomy -- Congresses.
Astronomical spectroscopy -- Congresses.
Sterrenkunde. gtt
Rn̲tgenstraling. gtt
Ultraviolette straling. gtt
Spectroscopie des rayons X -- Congrs̈.
Spectromťrie gamma -- Congrs̈.
Spectroscopie astronomique -- Congrs̈.
Astronomical spectroscopy. fast (OCoLC)fst00819666
Gamma ray astronomy. fast (OCoLC)fst00937597
X-ray spectroscopy. fast (OCoLC)fst01181847
Conference proceedings. fast (OCoLC)fst01423772
Gratton, Livio, ed.
International Astronomical Union.