TY - RPRT TI - Open marsh water management in the mid-Atlantic region: Aerial surveys of waterbird use AU - R.M. Erwin AU - D.K. Dawson AU - Daniel B. Stotts AU - L.S. McAllister AU - P.H. Geissler PY - 1991 DO - 10.1007/bf03160850 UR - https://pubs.usgs.gov/publication/5222978 ID - 5222978 ER -