Protecting the Guadalupe-San Antonio River system could be vital to the survival of the whooping crane.
Sass, Ronald. "Grus americana and a Texas River: A Case for Environmental Justice." (2010) James A. Baker III Institute for Public Policy of Rice University: http://www.bakerinstitute.org/research/grus-americana-and-a-texas-river-a-case-for-environmental-justice/.
James A. Baker III Institute for Public Policy of Rice University