The range-finders used in the army

Title (Dublin Core): The range-finders used in the army
Subject (Dublin Core): en Technology; en Reconnaisance; en Other
Article Title and/or Image Caption (Dublin Core): Title: Range-Finding in the Army; Subtitle: How to use range-finders to get result: the erect and inverted types
Contributor (Dublin Core): George M. Petersen (Article writer)
Language (Dublin Core): eng
Temporal Coverage (Dublin Core): Interwar period
Date Issued (Dublin Core): 1919-02
Is Part Of (Dublin Core): Popular Science Monthly, v. 94, n. 2, 1919
pages (Bibliographic Ontology): 118-120
Rights (Dublin Core): Public domain (Google digitized)
Source (Dublin Core): Google Books
Archived by (Dublin Core): Davide Donà; Marco Bortolami (editor)
Spatial Coverage (Dublin Core): United States of America