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HEAOHigh Energy Astronomy Observatory
HEAOHigh Energy Astrophysics Observatory
HEAOHigh Energy Astronomical Observatory
HEAOHoger Economisch En Administratief Onderwijs
References in periodicals archive ?
Now observations with the HEAO 3 satellite and subsequent balloon flights show that the brightness of this object varies over time, reports Alan S.
In gamma-ray spectra taken by the HEAO 3 satellite Alan S.