Observation balloons

Title (Dublin Core): Observation balloons
Subject (Dublin Core): en Technology; en Airplanes and Zeppelins; en Reconnaisance
Article Title and/or Image Caption (Dublin Core): Caption: "Directing artillery fire from captive balloon of German signal corps: the observer is about 300 feet from the ground".; Caption of image n. 2: "Launching a captive balloon: the observer has a telephone strapped to his body, anabling him to communicate with his superiors."; Article title: Making observations from captive balloon
Language (Dublin Core): eng
Temporal Coverage (Dublin Core): World War I
Date Issued (Dublin Core): 1915-11
Is Part Of (Dublin Core): Popular Mechanics, v. 24 n. 5, 1915
pages (Bibliographic Ontology): 695
Rights (Dublin Core): Public domain (Google digitized)
Source (Dublin Core): Google Books
Archived by (Dublin Core): Iacopo Tonon; Davide Donà (supervisor)
Spatial Coverage (Dublin Core): German Empire