Valdez, R., P. Mangan, R. Smith, and B. Nilson. 1982. Upper Colorado River Investigation
<br />(Rifle, Colorado to Lake Powell, Utah). Pages 101-279 in W. H. Miller et al., editors.
<br />Colorado River Fishery Project Final Report; Part Two, Field Studies. U. S. Fish and
<br />Wildlife Service and Bureau of Reclamation, Salt Lake City, Utah.
<br />Valdez, R. A., and R. J. Ryel. 1995. Life history and ecology of the humpback chub (Gila
<br />cypha) in the Colorado River, Crrand Canyon, Arizona. Final Report to Bureau of
<br />Reclamation, Salt Lake City, Utah. Contract No. O-CS-40-09110, Report TR-250-08,
<br />BIO/WEST, Inc., Logan, Utah.
<br />White, G. C., D. R. Anderson, K. P. Burnham, and D. L. Otis. 1982. Capture-recapture and
<br />removal methods for sampling closed populations. Los Alamos National Laboratory, LA-
<br />8787-NERP, Los Alamos, New Mexico.
<br />Wilkinson, L. 1997. SYSTAT Statistical Package. SPS5, Inc., Chicago, Ill.
<br />Wydoski, R. S., and J. Hamill. 1991. Evolution of a cooperative recovery program for
<br />endangered fishes in the upper Colorado River basin. Pages 123-135 in W. L. Minckley
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<br />American West. University of Arizona Press, Tucson.
<br />Affiliation of Individuals Cited as Personal Communication
<br />Bestgen, K. Kevin Bestgen. Larval Fish Laboratory, Colorado State University, Fort
<br />Collins, Colorado.
<br />Chart, T. Tom Chart, U. S. Bureau of Reclamation, Salt Lake City, Utah.
<br />Czapla, T. Tom Czapla, U. S. Fish and Wildlife Service, Denver, Colorado.
<br />Modde, T. Tim Modde. U. S. Fish and Wildlife Service, Vernal, Utah.
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