FREE - The State of Amphibians in the United States - via Herp Digest

2012, Muths, E.; Adams, M. J.; Grant, E. H. C.; Miller, D.; Corn, P. S.; Ball, L. C.

USGS Fact Sheet: 2012-3092

Full-text PDF at http://pubs.er.usgs.gov/publication/fs20123092

The document and additional supplemental information are available at the index page for this publication