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1909. The Norwegian sea. Rept. Norwegian fish. & marine invest., 2, 

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1901. Hydrographical tables. 63 pp. Copenhagen. 

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1907. Handbuch der ozeanographie, 1, 526 pp. Leipzig. 

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1891. Report of a physical investigation of the waters off the southern 

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1881. Physical hydrography of the Gulf of Maine. Rept. U. S. C. & 

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1912. The depths of the ocean. 20, 821 pp., 9 pis. London. 

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1903. Studier over naturforholdene i vestlandske fjorde. I. Hydrograf. 

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1907. On the influence of ice-melting upon oceanic circulation. Geogr. 

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1911. Revision der chaetognathen. Deutsche Sudpolar exped. Zool., 5,. 

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1897. Die gewasser der Bank von Neufundland und ihrer weiten umge- 

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1902. Oceanographie und maritime meterologie. Wiss. ergeb. Deutsch. 

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1910. Planktonkunde. 16, 723 pp., 1 taf. Leipzig, etc. 

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1897. Deep-sea exploration: a general description of the Steamer Alba- 

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1907. Dr. Otto Pettersson on the influence of ice melting on oceanic cir- 

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1901. Dredging and other records of the United States Fish Commis- 

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