Pianka, Eric R.561232652008-08-282017-05-112008-08-282017-05-112002http://hdl.handle.net/2152/646textelectronicengCopyright is held by the author. Presentation of this material on the Libraries' web site by University Libraries, The University of Texas at Austin was made possible under a limited license grant from the author who has retained all copyrights in the works.Horned toads--TexasPhrynosomatidae--TexasWildlife conservation--TexasThesis3099466