https://catalogue-scientifique.canada.ca/record=3607080~S6*frc
Rechercher McKelvey, Richard W; Rechercher Kim, Ann G; Rechercher Heisey, Bernice S; Rechercher Kleinmann, Robert L. P; Rechercher Deul, Maurice; Rechercher Summers, Ken R
Environment Canada, Canadian Wildlife Service, Pacific and Yukon Region, 1990
"The results of 16 aerial surveys over the estuary of the Fraser River between mid October 1989 and mid January 1990 are presented. The numbers seen were...
Publication gouvernementale