Referencia	Título	Categoría
ISO/TC 173	Assistive products	A
ISO/TC 173/SC 7	Assistive products for persons with impaired sensory functions	A

Notas

Liaisons A: Organizations that make an effective contribution to the work of the technical committee or subcommittee for questions dealt with by this technical committee or subcommittee. 
Liaisons B: Organizations that have indicated a wish to be kept informed of the work of the technical committee or subcommittee. 
Liaisons C: Organizations that make a technical contribution to and participate actively in the work of a working group.