Surveillance of breeding red-throated divers in Shetland, 1981 : investigations into monitoring techniques /
Gomersall, C. H.
Shetland Oil Terminal Environmental Advisory Group.
Sandy, [Eng.] : Royal Society for the Protection of Birds,
1981.
"PB83-257667."
A report to the Shetland Oil Terminal Environmental Advisory Group.
Includes bibliography.
Photocopy.
Divers (Birds)