Hugh E. Willoughby

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Walter Gillis Peacock, Jeffrey K. Lazo, Hugh Gladwin, 2009 .

Frank D. Marks, Hugh E. Willoughby, E. N. Rappaport, 2007 .

Walter Gillis Peacock, Jeffrey K. Lazo, Hugh Gladwin, 2007 .

Hugh E. Willoughby, H. Willoughby, Marcy B. Chelmow, 1982 .

David P. Jorgensen, Hugh E. Willoughby, Luther W. White, 2013 .

Hugh E. Willoughby, 2007, Science.

Hugh E. Willoughby, D. Jorgensen, H. Willoughby, 1985 .

Hugh E. Willoughby, H. Willoughby, 1990 .

Michael L. Black, John F. Gamache, Hugh E. Willoughby, 2003 .