Schalen, Carl.
Space distribution of B & A type stars in bright & dark galactic regions:researches based on determinations of spectral type & luminosity class for 4300 stars - Algunist & Wiksells Boktryckeri ; 1928.
Star
Distribution.
524.66-314 SCH
Space distribution of B & A type stars in bright & dark galactic regions:researches based on determinations of spectral type & luminosity class for 4300 stars - Algunist & Wiksells Boktryckeri ; 1928.
Star
Distribution.
524.66-314 SCH