TY - RPRT TI - Gonadal abnormalities in frogs (Lithobates spp.) collected from managed wetlands in an agricultural region of Nebraska, USA AU - Diana M. Papoulias AU - Matt S. Schwarz AU - Lourdes Mena PY - 2013 DO - 10.1016/j.envpol.2012.07.042 UR - https://pubs.usgs.gov/publication/70039931 ID - 70039931 ER -