Sound waves to locate subs not yet infallible

Title (Dublin Core): Sound waves to locate subs not yet infallible
Subject (Dublin Core): en Technology; en Anti-submarines
Article Title and/or Image Caption (Dublin Core): Sound waves to locate subs not yet infallible
Language (Dublin Core): eng
Temporal Coverage (Dublin Core): 1930
Date Issued (Dublin Core): 1930-01-01
Is Part Of (Dublin Core): Popular Mechanics, v. 53, n. 1, 1930
pages (Bibliographic Ontology): 97
Rights (Dublin Core): Public domain
Source (Dublin Core): Google Books
References (Dublin Core): British Fleet
Archived by (Dublin Core): Alessandro Barcaro; Marco Bortolami (editor)
Spatial Coverage (Dublin Core): United Kingdom