Lane, E.W.. 1930. "Digest of Tests of Stone, Percolation, and Water Table; Madden Dam; Panama Canal Zone; February 20, 1930". Bureau of Reclamation, Report Number HYD-.3.
Abstract:
Web Link:
http://www.usbr.gov/pmts/hydraulics_lab/pubs/HYD/HYD-0-3_TM-125.pdf
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