TY - RPRT TI - Evaluation of wetland development and waterbird response at Elk Creek Wildlife management area, Lake Mills, Iowa, 1961 to 1990 AU - M.W. Weller AU - G.W. Kaufmann AU - P.A. Vohs PY - 1991 DO - 10.1007/bf03160852 UR - https://pubs.usgs.gov/publication/70209168 ID - 70209168 ER -