TY - RPRT TI - Evaluation of waterfowl conservation under the North American Waterfowl Management Plan AU - B. Kenneth Williams AU - M.D. Koneff AU - David A. Stith PY - 1999 DO - 10.2307/3802628 UR - https://pubs.usgs.gov/publication/70021782 ID - 70021782 ER -