Alexander Behm − Der Erfinder des Echolots?
Hydrographische Nachrichten ; 96 ; 32-34
2013
3 pages , 508290
Article (Journal)
Electronic Resource
German
Alexander Behm und 100 Jahre Echolotpatente
HENRY – Federal Waterways Engineering and Research Institute (BAW) | 2013
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Behm acoustic sounder for aircraft
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Springer Verlag | 2023
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