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Thaeler, C.S. Jr. 1968. An analysis of the distribution of pocket gopher species in northeastern California (Genus Thomomys). University of California Publications in Zoology Vol. 86, University of California Press, Berkeley.

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Whitford, W.G. 1968. Physiological responses to temperature and dessication in the endemic New Mexico Plethodontids, Plethedon neomexicanus and Aneides hardii.

Edwards, P., and D. Stacy. 1968. The development of nestling curve-billed thrashers. Department of Ecology and Evolutionary Biology report, University of Arizona, Tucson.

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Foerster, R.E. 1968. The sockeye salmon, Oncorhynchus nerka. Bulletin of the Fisheries Research Board of Canada 162 xv + 422 pp.

Tyler, J.D. 1968. Distribution and vertebrate associates of the black-tailed prairie dog in Oklahoma. Ph.D. dissertation. University of Oklahoma, Norman.

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Orians, G.H., Christman. 1968. Behavior of redwinged, tri-colored, and yellow headed blackbirds. Berkeley. 301 pp.

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Kortright, F.H. 1967. The ducks, geese, and swans of North America. The Stackpole Company, Harrisburg, PA, and Wildlife Management Institute, Washington, D.C. 476 pp.

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