Search subject headings
...
Stats
Colophon
Auxiliary sciences of history
›
Civilization
›
Social sciences
›
Sociology
›
Communication
›
Communication and traffic
›
Communications, Military
›
Sound-powered telephones
Sound-powered telephones
Topic
sh2009004889
·
id.loc.gov
Used for
Telephones, Sound-powered
Broader Terms (3)
Communications, Military
Telephone
Wireless communication systems
Hierarchy
Hide
Broader groupings:
show peers
