TY  - RPRT
TI  - Effects of landscape composition and wetland fragmentation on frog and toad abundance and species richness in Iowa and Wisconsin, USA [abstract]
AU  - M. G. Knutson
AU  - J.R. Sauer
AU  - D.A. Olsen
AU  - M.J. Mossman
AU  - L.M. Hemesath
AU  - M.J. Lannoo
PY  - 1998
UR  - https://pubs.usgs.gov/publication/5211001
ID  - 5211001
ER  -