The microphones and geophones, used to locate German mines during war, could be used to save miners trapped underground
Item
Title (Dublin Core)
The microphones and geophones, used to locate German mines during war, could be used to save miners trapped underground
Subject (Dublin Core)
Article Title and/or Image Caption (Dublin Core)
Trapped in the Bowels of the Earth
Language (Dublin Core)
eng
Temporal Coverage (Dublin Core)
Date Issued (Dublin Core)
1919-05
Is Part Of (Dublin Core)
pages (Bibliographic Ontology)
67
Rights (Dublin Core)
Public domain (Google digitized)
Source (Dublin Core)
Archived by (Dublin Core)
Davide Donà
Marco Bortolami (editor)