Books by Frank A. Pfyl:
Books in the extended shelves:
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Pfyl, Frank A.: Experimental determination of the recovery factor and analytical solution of the conical flow field for a 20 ̊included angle cone at Mach numbers of 4.6 and 6.0 and stagnation temperatures to 2600 ̊R (National Aeronautics and Space Administration, 1961), also by Leroy L. Presley and Ames Research Center (page images at HathiTrust)
Find more by Frank A. Pfyl at your library, or elsewhere.