Gigantic Underground Forts Guard France. Bomb and Gas-Proof Caverns Dot Frontier

Title (Dublin Core): Gigantic Underground Forts Guard France. Bomb and Gas-Proof Caverns Dot Frontier
Subject (Dublin Core): en Technology; en Trenches and fortifications
Article Title and/or Image Caption (Dublin Core): Gigantic Underground Forts Guard France. Bomb and Gas-Proof Caverns Dot Frontier
Language (Dublin Core): eng
Temporal Coverage (Dublin Core): interwar period
Date Issued (Dublin Core): 1934-02
Is Part Of (Dublin Core): Popular Mechanics, v. 61, n. 2, 1934
pages (Bibliographic Ontology): 250-251
Rights (Dublin Core): Public Domain (Google digitized)
Source (Dublin Core): Google Books
Archived by (Dublin Core): Alberto Bordignon