TY - RPRT TI - Spatio-temporal variations in age structures of a partially re-established population of northern river otters ( Lontra canadensis ) AU - Dominic A. Barrett AU - David M. Leslie PY - 2012 DO - 10.1674/0003-0031-168.2.302 UR - https://pubs.usgs.gov/publication/70154913 ID - 70154913 ER -