The Foundations of the Nineteenth Century
[ar] أسس القرن التاسع عشر
[bg] Основите на XIX век
[ca] Els fonaments del segle XIX
[de] Die Grundlagen des neunzehnten Jahrhunderts
[es] Los fundamentos del siglo XIX
[it] I fondamenti del diciannovesimo secolo
[ko] 19세기의 기초
[pt] The Foundations of the Nineteenth Century
[ru] Основы XIX века
[tr] On Dokuzuncu Yüzyılın Temelleri