Zoology

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MUNK, OLE.

Copenhagen, 1966.

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PETERSEN, ALWIN.

Kbhvn., 1926-42.

KÖHLER, WOLFGANG. - THE CONCEPT OF "INSIGHT".

Berlin, Julius Springer, 1921.

SPITSBERGEN - THE FIRST OXFORD UNIVERSITY EXPEDITION TO SPITSBERGEN 1921.

London, Oxford University Press, 1925-29.

THE "DANA"-EXPEDITIONS -

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TÜMPEL, R.

Gotha, Friedrich Emil Perthes, 1908.

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MORLEY, DEREK WRAGGE.

London, Collins, 1953.