Biology

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TINBERGEN, NIKOLAAS.

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

Berlin, Julius Springer, 1921.

WILMUT, I, A E SCHNIEKE, J MCWHIR, A J KIND & K H S CAMPBELL.

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Kjöbenhavn, Bianco Luno, 1845.

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LOEB, JACQUES. - "TROPISM" AS THE BASIS OF PSYCHOLOGY.

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Leipzig und Berlin, B.G. Teubner, 1914.

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FJORD, N. J. (+) J. L. JENSEN ET AL.

Kjøbenhavn, Nielsen & Lydiche, 1888

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København, Bianco Luno, 1914