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Human Factors (HF); Usability checklist for telephones Basic requirements
STANDARD published on 11.12.1992
Designation standards: ETSI ETR 051-ed.1
Publication date standards: 11.12.1992
SKU: NS-311559
The number of pages: 17
Approximate weight : 51 g (0.11 lbs)
Country: European technical standard
Category: Technical standards ETSI
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