editor of
-
book
- Amphibian Declines: The Conservation Status of United States Species. University of California Press. 2005
- Amphibian Declines: The Conservation Status of United States Species. University of California Press. 2005
- Amphibian Declines: The Convservation Status of United States Species. University of California Press. 2005
- Status and Conservation of Midwestern Amphibians. University of Iowa. 1998