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[Subject: Relation Of Natural Factors]
Translated by: POVL H. RIIS-KNUDSEN
Translated in 152 languages
Translated in 76 languages
[Subject: Generalities]
Translated by: TZUNG-HSIEN CHEN
Translated in 43 languages
Translated by: MAURIZIO FERRIN
Translated in 32 languages
Translated in 9 languages
Translated by: DAVID LAURENT
Translated in 8 languages