Wikipedia contributors. (2025, February 19). Paul Dirac. In Wikipedia, The Free Encyclopedia. Retrieved 18:10, February 23, 2025, from https://en.wikipedia.org/w/index.php?title=Paul_Dirac&oldid=1276469151
Northwest Waterfall Survey The Pacific Northwest is home to more Waterfalls than anywhere else in North America. The Northwest Waterfall Survey was founded in order to create a thorough inventory of these outstanding natural features.