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~~ ~~~. <br />Technical Papers <br />OF THE U.S. FISH AND WILDLIFE SERVICE <br />99. The Razorback Sucker, X~/rauchen texanus, in the Upper Colorado <br />River Basin, 197476 <br />By Charles W. McAda <br />Richard S. Wydoski <br />UNITED STATES DEPARTMENT OF THE INTERIOR <br />FISH AND WILDLIFE SERVICE <br />Washington, D.C. 1980 <br />