Blomgren, W.E.; Winter, I.A.; Kinzie, P.A.. 1939. "Tests to Determine Operating Characteristics of Tunnel-Plug Outlet Works at Hoover Dam; Boulder Canyon Project; February 3, 1939". Bureau of Reclamation, Report Number HYD-49.
Abstract:
Web Link:
http://www.usbr.gov/pmts/hydraulics_lab/pubs/HYD/HYD-49.pdf
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