Sisältää myös kolme muuta artikkelia:
Kaisa Kononen, Åke Niemi: Variation in phytoplankton and hydrography in the outer archipelago at the entrance to the Gulf of Finland in 1968–1975
Kimmo K. Kahma: On prediction of fetch-limited wave spectrum in a steady wind
E.M. Emelyanov: Basins of the Baltic Sea - traps for element
