New instrument simplify defense gunnery

Title (Dublin Core): New instrument simplify defense gunnery
Subject (Dublin Core): en Technology; en Trenches and fortifications; en Artillery (and shells)
Article Title and/or Image Caption (Dublin Core): New instrument simplify defense gunnery
Language (Dublin Core): eng
Date Issued (Dublin Core): 1923-02
Is Part Of (Dublin Core): Popular Mechanics, v. 39, n. 2, 1923
pages (Bibliographic Ontology): 234
Rights (Dublin Core): public domain
Source (Dublin Core): google books
Archived by (Dublin Core): Marco Bortolami; Marco Bortolami (editor)
Spatial Coverage (Dublin Core): Panama Canal