New radio system designed to prevent airplane collisions

Title (Dublin Core): New radio system designed to prevent airplane collisions
Subject (Dublin Core): en Airplanes and Zeppelins; en Communication
Article Title and/or Image Caption (Dublin Core): Radio System Prevents Airplane Collisions
Language (Dublin Core): eng
Temporal Coverage (Dublin Core): World War II
Date Issued (Dublin Core): 1939-07
Is Part Of (Dublin Core): Popular Science Monthly, v. 135, n. 1, 1939
pages (Bibliographic Ontology): 109
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