Visibility bias during aerial surveys of harbor porpoise Phocoena phocoena in Oregon and Washington

Citation:

Osmek, S., J. Calambokidis, D. Rugh, and J. Laake. 1993. Visibility bias during aerial surveys of harbor porpoise Phocoena phocoena in Oregon and Washington. p. 83 in: Abstracts Tenth Biennial Conference on the Biology of Marine Mammals, Galveston, Texas, 11-15 November 1993.Society for Marine Mammalogy, Lawrence, KA.