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[Subject: Generalities]
Translated by: KATRIN HELD
Translated in 14 languages
[Subject: Botany]
Translated in 11 languages
[Subject: Geology, Meteorology, Hydrology]
- Wasserstrahl aus dem Erdboden
Translated by: GIULIA GIORGI
Translated in 7 languages
[Subject: Precision & Other Instruments]
Translated in 6 languages
Translated in 15 languages