 | Clark, R. T. (Richard Turnbull), 1902-1965. 4n | (1) |
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 | Clark, R. T. (Richard Turnbull), 1902-1965. 4n; Beef cattle : dehorning, castrating, branding, and marking / by R.T. Clark, A.L. Baker, and George E. Whitmore. Washington, D.C. : U.S. Dept. of Agriculture, 1970. | |
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