Variations of the hydrographic situation in the Southern Bight of the North Sea, February - March 1969
Otto, L.; Visser, M.P.; Tijssen, S.B. (1970). Variations of the hydrographic situation in the Southern Bight of the North Sea, February - March 1969. Ann. Biol. (ISSN 0970-0153) 26: 71-73
In: Annals of biology. Bio-Publishers: Ludhiana. ISSN 0970-0153, meer
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