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Surveys of Calling Amphibians in North Dakota

Figure 9 - Effects of Date

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Previous Section -- Figure 8 - Wood Frog
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U.S. Department of the Interior | U.S. Geological Survey
URL: http://www.npwrc.usgs.gov/resource/herps/amsurvey/date.htm
Page Contact Information: npwrc@usgs.gov
Page Last Modified: August 3, 2006