Sladen, William J L
-
1991: Wildfowl Special Issue No. 1 - SECTION ONE: DISTRIBUTION AND STATUS
Winter distribution of Tundra Swans Cygnus columbianus breeding in Alaska and Western Canadian Arctic
Abstract PDF -
1991: Wildfowl Special Issue No. 1 - SECTION SEVEN: MANAGEMENT AND CONSERVATION
Swans should not be hunted
Abstract PDF