Last update: Sat Oct 14 03:04:52 MDT 2017
@Article{Morgan:1955:SSG, author = "W. W. Morgan", title = "The Spiral Structure of the Galaxy", journal = j-SCI-AMER, volume = "192", number = "5", pages = "42--47", month = may, year = "1955", CODEN = "SCAMAC", DOI = "https://doi.org/10.1038/scientificamerican0555-42", ISSN = "0036-8733 (print), 1946-7087 (electronic)", ISSN-L = "0036-8733", bibdate = "Sat May 18 15:58:43 MDT 2013", bibsource = "http://www.math.utah.edu/pub/tex/bib/sciam1950.bib", URL = "http://www.nature.com/scientificamerican/journal/v192/n5/pdf/scientificamerican0555-42.pdf", acknowledgement = ack-nhfb, fjournal = "Scientific American", journal-URL = "http://www.nature.com/scientificamerican", }