> Multivolume work
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2:
Spectra, magnitudes and colours of stars in regions of different galactic latitude 2 + 40°galactic latitude : with 8 figures in the text by Carl Schalén
Stockholm: Almqvist & Wiksells boktryckeri ab, 1948-1949
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1:
Spectra, magnitudes and colours of stars in regions of different galactic latitude 1 + 20° galactic latitude : mit 14 figures in the text by Carl Schalén
Stockholm: Almqvist & Wiksells boktryckeri ab, 1948-1949