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[Subject: Generalities]
Translated by: SERGIO CRAGNOLINI
Translated in 27 languages
[Subject: Geometry]
Translated in 14 languages
Translated in 13 languages
[Subject: Lumber, Cork, Wood Technologies]
Translated in 9 languages
[Subject: Mathematics]
Translated in 3 languages
[Subject: Electricity & Electronics]
[Subject: Geology, Meteorology, Hydrology]
Translated in 180 languages
[Subject: Relation Of Natural Factors]
Translated in 8 languages