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[Subject: Psychology]
Translated by: STEVEN STENFERT
Translated in 41 languages
[Subject: Geology, Meteorology, Hydrology]
- droog
Translated by: DAVID LAURENT
Translated in 22 languages
[Subject: Ecology]
Translated by: ISAAC SMITH
Translated in 12 languages
[Subject: Water, Air, Space Transportation]
Translated in 68 languages