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Psychologist at Work An Introduction to Experimental Psychology
by Harrower, M R, Koffka, K.
ISBN: 9780415210249
List Price: $150.00
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Psychologische Forschung, 1922, Vol. 1: Zeitschrift für Psychologie und Ihre Grenzwissenscha...
by K. Koffka
ISBN: 9780282223700
List Price: $23.57