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1 Mai 1901 Jahr - Rensist Likert -head of the institute for social research in Michigan University. -pioneer in developing scientist approaches to attitude service. -5-piont Liker Scale.
Zugefügt zum Band der Zeit:
22 Nov 2017
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Jessa P. Iraula I4
Datum:
1 Mai 1901 Jahr
Jetzt
~ 123 years ago