Revised MK spectral atlas for stars earlier than the sun
By: W.W. Morgan, H.A. Abt [and] J.W. Tapscott.
Contributors: Tapscott, J. W.; Abt, H. A.
Publisher: University of Chicago, Yerkes Observatory; Kilt Peak National Observatory
Published: 1978
Place of publication: [s.l.]
Language: eng
Notes: '... improved version of... "Atlas of stellar spectroscopy" by Morgan, Keenan, and Kellman (University of Chicago Press, 1943)...' - introd.