Seaphones track "footsteps" of unseen craft

Title (Dublin Core): Seaphones track "footsteps" of unseen craft
Subject (Dublin Core): en Technology; en Ships; en Communication; en Reconnaisance
Article Title and/or Image Caption (Dublin Core): Seaphones track "footsteps" of unseen craft
Language (Dublin Core): eng
Date Issued (Dublin Core): 1924-01
Is Part Of (Dublin Core): Popular Mechanics, v. 41, n. 1, 1924
pages (Bibliographic Ontology): 38
Rights (Dublin Core): public domain
Source (Dublin Core): google books
Archived by (Dublin Core): Marco Bortolami; Marco Bortolami (editor)