Não informado. (1977). Scottish fisheries information pamphlet. Department of Agriculture and Fisheries for Scotland.
Chicago-referens (17:e uppl.)Não informado. Scottish Fisheries Information Pamphlet. Aberdeen, Escocia: Department of Agriculture and Fisheries for Scotland, 1977.
MLA-referens (8:e uppl.)Não informado. Scottish Fisheries Information Pamphlet. Department of Agriculture and Fisheries for Scotland, 1977.
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