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Translated by: RUDOLF POLZER
Translated in 39 languages
[Subject: Generalities]
Translated by: DAVID LAURENT
Translated in 34 languages
Translated by: TZUNG-HSIEN CHEN
Translated in 32 languages
[Subject: Psychology]
Translated by: GUEST USER
Translated in 14 languages
Translated in 6 languages
Translated by: SYLVIA VERGARA
Translated in 77 languages
Translated in 25 languages
[Subject: Sociology]
Translated by: KATRIN HELD
Translated in 13 languages