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E.138 : Human factors aspects of public telephones to improve their usability for older people

Recommendation E.138

In force components
Number
Title Status
E.138 (06/02)
 
Human factors aspects of public telephones to improve their usability for older people   In force
E.138 Erratum 1 (02/03)
 
  In force

 

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Updated : 2006/03/21