(1985). Biological research Ems-Dollard Estuary: A survey of the ecosystem research during 1973 and 1982 by order of the Ministry of Transport and Public Works. Rijkswaterstaat.
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Chicago Style (17th ed.) Zitazioa
Biological Research Ems-Dollard Estuary: A Survey of the Ecosystem Research During 1973 and 1982 by Order of the Ministry of Transport and Public Works. The Hague: Rijkswaterstaat, 1985.
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MLA (9th ed.) Zitazioa
Biological Research Ems-Dollard Estuary: A Survey of the Ecosystem Research During 1973 and 1982 by Order of the Ministry of Transport and Public Works. Rijkswaterstaat, 1985.
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Kontuz: berrikusi erreferentzia hauek erabili aurretik.