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1989AISof...5...81R - Astrofisik. Issledovanija - Sofia, 5, 81-87 (1989)
Spectral classification of stars in the direction of the OB-associations Cygnus OB4, Cepheus-Lacerta OB1 and Cassiopeia OB9.
RADOSLAVOVA T.
Journal keyword(s):
Simbad objects: 3
