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by SVERDRUP
by Sverdrup, Keith; Armbrust, Virginia
by Sverdrup-thygeson, Anne
by Sverdrup, Keith A.; Armbrust, E. Virginia
by Sverdrup, Keith; Kudela, Raphael
by Sverdrup-thygeson, Anne; Moffatt, Lucy; Sverdrup-Tygeson, Tuva
by Sverdrup, Otto Neumann; Hearn, Ethel Harriet
by Asland, John; Brattström, Margareta; Lind, Goran; et al.