German dirigible secret found by scientists

Title (Dublin Core): German dirigible secret found by scientists
Subject (Dublin Core): en Technology; en Airplanes and Zeppelins
Article Title and/or Image Caption (Dublin Core): German dirigible secret found by scientists
Language (Dublin Core): eng
Date Issued (Dublin Core): 1921-06
Is Part Of (Dublin Core): Popular Mechanics, v. 36, n. 1, 1921
pages (Bibliographic Ontology): 876
Rights (Dublin Core): public domain
Source (Dublin Core): google books
Archived by (Dublin Core): Marco Bortolami; Marco Bortolami (editor)