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J. Willard Marriott Library, University of Utah, Salt Lake City, Utah 84112; Ecological and animal data provided by NatureServe. NatureServe Explorer: An online encyclopedia of life [web application]. NatureServe, Arlington, Virginia. Available http://www.natureserve.org/explorer.
"This is a very short recording of a single nocturnal advertisement call from one toad at a small pond in the grasslands of Cochise County, Arizona in August." Source: Gary Nafis, http://www.californiaherps.com/