MORGAN, W. W.
An atlas of stellar spectra with an outline of spectral classification, by W. W. Morgan, Philip C. Keenan & Edith Kellman.
MORGAN, W. W. An atlas of stellar spectra with an outline of spectral classification, by W. W. Morgan, Philip C. Keenan & Edith Kellman. © 12Jan43; A170312. W. W. Morgan (A); 4Jan71; R498192.
W. W. Morgan|A