The dirigible and submarine base "Helgoland"

Title (Dublin Core): The dirigible and submarine base "Helgoland"
Subject (Dublin Core): en Technology; en Airplanes and Zeppelins; en Trenches and fortifications; en Submarines
Article Title and/or Image Caption (Dublin Core): Caption: "Helgoland, which 25 years ago passed from British into German possession is now by the irony of fate the Kaiser's dirigible base for operations against the English coast. It also serves as a supply depot for submarine in the North Sea and is convenient to Emden, Wilhemmshaven and cuxhaven".; Article title: HELGOLAND GERMAN SUBMARINE AND AERO BASE
Language (Dublin Core): eng
Temporal Coverage (Dublin Core): World War, 1914-1918; [–][+]World War I
Date Issued (Dublin Core): 1915-08
Is Part Of (Dublin Core): Popular Mechanics, v. 24, n. 2, 1915
pages (Bibliographic Ontology): 209
Rights (Dublin Core): Public domain (Google digitized)
Source (Dublin Core): Google Books
References (Dublin Core): [–][+]Heligoland; [–][+]German Emperor; [–][+]North Sea; [–][+]Emden; [–][+]Cuxhaven; [–][+]Wilhelmshaven
Archived by (Dublin Core): Iacopo Tonon; Davide Donà (supervisor)
Spatial Coverage (Dublin Core): [–][+]German Empire