Aerial range finding instruments

Title (Dublin Core): Aerial range finding instruments
Subject (Dublin Core): en Technology; en Anti-aircraft
Article Title and/or Image Caption (Dublin Core): Caption: "Aerial range finding instruments with which the height, distance, and speed of air craft may be determined: equipment of this kind is supposed to be in use at most of the defense post guarding Paris".
Language (Dublin Core): eng
Temporal Coverage (Dublin Core): World War I
Date Issued (Dublin Core): 1916-01
Is Part Of (Dublin Core): Popular Mechanics, v. 25, n. 1, 1916
pages (Bibliographic Ontology): 35
Rights (Dublin Core): Public domain
Source (Dublin Core): Google books
Archived by (Dublin Core): Iacopo Tonon; Davide Donà (Supervisor)
Spatial Coverage (Dublin Core): United States of America