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[Subject: Relation Of Natural Factors]
Translated by: ISAAC SMITH
Translated in 34 languages
[Subject: Water, Air, Space Transportation]
- Vz�ahujúci sa na letectvo, lietanie, lietadlá.
Translated by: JANKA LOPATNIKOVA
Translated in 17 languages
[Subject: Generalities]
- Vz�ahujúci sa na lietanie, letectvo.
- Vz�ahujúci sa na aeronautiku.
Translated in 30 languages