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Die internationale Schiffahrtskrise und ihre weltwirtschaftliche Bedeutung | Bok | 382.15:656.6 H Helander, Sven / - Jena, 1928. - v, 397 s. (Probleme der Weltwirtschaft : 42) - Språk: Tysk | Helander, Sven | 1928 |
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Memorandum on post-war prospects of steam shipping | Bok | 656.6(091) H Helander, Sven / - Kiel : University of Kiel, 1928. - 210 s. - Språk: Engelsk | Helander, Sven | 1928 |
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Ship prices and international shipping statistics 1897-1927 | Bok | Mag. 629.12(085) H Helander, Sven / - Kiel : University of Kiel, ix, 1929. - ix, 166 s. - Språk: Engelsk | Helander, Sven | ix, 1929 |