Discusses lighthouses with fixed and intermittent light signals. (From l'Aerophile.)
Luminous beacons on aerial routes for nocturnal flying
Le balisage lumineux des routes aeriennes pour la navigation nocturne
Genie Civil ; 79 , n 5
1921
2 pages
2 Figs.
Article (Journal)
French
© Metadata Copyright Elsevier B. V. All rights reserved.
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