TY  - BOOK
AU  -  Hansen,Henry A.
TI  -  The trumpeter swan in Alaska / 
U1  -  636.598 
PY  - 1971///
CY  -  [s.l]. : 
PB  -  U. S. Bureau of Sport Fisheries Wildlife, 
KW  -  Trumpeter swan
N1  -  Includes bibliographical references
ER  -