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By "Ellenberger, W. P. (William Penn), 1871-1931"
Cattle-fever ticks and methods of eradication / W.P. Ellenberger and Robert M. Chapin.
By: Ellenberger, W. P. - Chapin, Robert M.
Publication info: Washington, D.C. :U.S. Dept. of Agriculture,1919.
Contributed by: University of California Libraries (archive.org)