Last update: Sun Mar 31 02:55:59 MDT 2019
@Article{Hoffman:1920:WCD, author = "Frederick L. Hoffman", title = "Why the Cliff Dwellers Vanished", journal = j-SCI-AMER, volume = "123", number = "26", pages = "630--630", day = "25", month = dec, year = "1920", CODEN = "SCAMAC", DOI = "https://doi.org/10.1038/scientificamerican12251920-630", ISSN = "0036-8733 (print), 1946-7087 (electronic)", ISSN-L = "0036-8733", bibdate = "Sat May 18 16:11:34 MDT 2013", bibsource = "http://www.math.utah.edu/pub/tex/bib/sciam1920.bib", URL = "http://www.nature.com/scientificamerican/journal/v123/n26/pdf/scientificamerican12251920-630.pdf", acknowledgement = ack-nhfb, fjournal = "Scientific American", journal-URL = "http://www.nature.com/scientificamerican", }