262. Minutes of the Meetings of the Western Irrigation and Drainage Association, 1936 and 1938, 1929
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Minutes, reports, and founding materials for the Western Irrigation and Drainage Research Association for which Ralph Parshall served as chairman in the 1930s
Parshall, Ralph L. (Ralph Leroy), 1881-1959Lewis, M. R.; McLaughlin, W. W.