Fans of dirigibles are in for a treat, with the republication of this rare 1929 document from the Journal of the American Society of Naval Engineers. "Airship Progress" provides updates on the two airships (ZRS-4 and ZRS-5) ordered by the Navy. Includes physical specs, photographs, tables, and charts.

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Рейтинг книги: 5 из 5, 8 голос(-ов).