$a The oceans their physics, chemistry, and general biology / by H. U. Sverdrup, Martin W. Johnson, Richard H. Fleming. - Print. 9. March 1959. - Englewood Cliffs, New Jersey, cop. 1942. $b (Professor of Geophysics, University of Oslo, Norway Director, Norsk Polarinstitutt)
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$a LCA online
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$a no.wikipedia, 6.04.2016
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$a Harald Ulrik Sverdrup / Norsk Polarinstitutt. - Oslo, 1958.