Search on: TELEPHONE SWITCHBOARDS 
Descriptors Found: 1
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Descriptor English:   Telephone 
Descriptor Spanish:   Teléfono 
Descriptor Portuguese:   Telefone 
Synonyms English:   Switchboard Service
Telephone Switchboards  
Tree Number:   L01.178.847.698
Definition English:   An instrument for reproducing sounds especially articulate speech at a distance. (Webster, 3rd ed) 
History Note English:   74(71) 
Allowable Qualifiers English:  
classification economics
ethics history
instrumentation legislation & jurisprudence
supply & distribution statistics & numerical data
standards trends
utilization  
Record Number:   14067 
Unique Identifier:   D013689 

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