A report to SOTEAG on the numbers of tysties (Cepphus grylle) in the area of the Yell Sound islands, September 1982 /
Richardson, M. G.
Ewins, P. J.
Shetland Oil Terminal Environmental Advisory Group.
Aberdeen : Shetland Oil Terminal Environmental Advisory Group, University of Aberdeen,
1983.
Includes bibliography.
Birds
Black guillemot