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1976RMxAA...2...13B - Rev. Mex. Astron. Astrofis., 2, 13-21 (1976)
Spectral classification of early-type stars. Calibration using a TV-vidicon multichannel system.
BISIACCHI G.F., FIRMANI C., ORTEGA R. and PENICHE R.
Journal keyword(s):
Simbad objects: 72
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