Roy W. Hann Jr., PhD, PE, DEE
November 12, 2019
Title: Professor Emeritus, Ranch Owner Location: Gause, TX United States
Title: Professor Emeritus, Ranch Owner Location: Gause, TX United States
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Marquis Who’s Who was established in 1898 and promptly began publishing biographical data in 1899. More than 125 years ago, our founder, Albert Nelson Marquis, established a standard of excellence with the first publication of Who’s Who in America.