Upper Midwest Environmental Sciences Center
Monitoring frog calls with parabolic microphone: Full resolution
Photo by Leah Monson, USGS, UMESC, 2004
Usage: This image is public domain/of free use. Please refer to the USGS Copyright section for more details.
U.S. Department of the Interior |
U.S. Geological Survey
URL: http://www.umesc.usgs.gov/images/photos/monitoring_frog_calls.html
Page Contact Information: Contacting the Upper Midwest Environmental Sciences Center
Page Last Modified:
March 7, 2011
