strange concrete battleships built on ocean's floor

Title (Dublin Core): strange concrete battleships built on ocean's floor
Subject (Dublin Core): en Technology; en Trenches and fortifications; en Ships
Article Title and/or Image Caption (Dublin Core): strange concrete battleships built on ocean's floor
Contributor (Dublin Core): Paul H. Woodruff (writer)
Language (Dublin Core): eng
Date Issued (Dublin Core): 1921-01
Is Part Of (Dublin Core): Popular Mechanics, v. 35, n. 1, 1921
pages (Bibliographic Ontology): 2-5
Rights (Dublin Core): public domain
Source (Dublin Core): google books
Archived by (Dublin Core): Marco Bortolami; Marco Bortolami (editor)
Spatial Coverage (Dublin Core): Luzon; Corregidor; Manila Bay