TY - RPRT TI - Habitat use and home range of mallards breeding in Minnesota AU - D.S. Gilmer AU - I.J. Ball AU - L.M. Cowardin AU - John Riechmann AU - J.R. Tester PY - 1975 DO - 10.2307/3800242 UR - https://pubs.usgs.gov/publication/1001660 ID - 1001660 ER -