Variable-angle airplane machine-gun

Title (Dublin Core): Variable-angle airplane machine-gun
Subject (Dublin Core): en Technology; en Machine Guns; en Airplanes and Zeppelins
Article Title and/or Image Caption (Dublin Core): Caption: "Showing the variable-angle machine-gun mounting installed at the rear cockpit of a De Haviland "4" bombing plane: large numbers of these machines, which are of British design, are being manufactured in America and shipped abroad for our aeronautical forces overseas".
Language (Dublin Core): eng
Temporal Coverage (Dublin Core): World War I
Date Issued (Dublin Core): 1918-11
Is Part Of (Dublin Core): Popular Mechanics, v. 30, n. 5, 1918
pages (Bibliographic Ontology): 686
Rights (Dublin Core): Public domain
Source (Dublin Core): babel.hathitrust
Archived by (Dublin Core): Iacopo Tonon
Spatial Coverage (Dublin Core): United Kingdom