Four-bladed propeller tested for planes

Title (Dublin Core): Four-bladed propeller tested for planes
Subject (Dublin Core): en Technology; en Airplanes and Zeppelins
Article Title and/or Image Caption (Dublin Core): Four-Bladed Propeller Tested for Planes
Language (Dublin Core): eng
Temporal Coverage (Dublin Core): World War II
Date Issued (Dublin Core): 1939-11
Is Part Of (Dublin Core): Popular Science Monthly, v. 135, n. 5, 1939
pages (Bibliographic Ontology): 138
Rights (Dublin Core): Public domain (Google digitized)
Source (Dublin Core): Google Books
References (Dublin Core): United States Army
Archived by (Dublin Core): Davide Donà; Marco Bortolami (editor)
Spatial Coverage (Dublin Core): United States of America