SAO/NASA Astrophysics Data System (ADS)
Title:
Redshifts and magnitudes of extragalactic nebulae.
Authors:
Humason, M. L., Mayall, N. U., & Sandage, A. R.
Journal:
Astronomical Journal, Vol. 61, p. 97-162 (1956)
Bibliographic Code:
1956AJ.....61...97H
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