Reference	Title	Category
ISO/TC 23/SC 4	Tractors	A
ISO/TC 23/SC 6	Equipment for crop protection	A
ISO/TC 23/SC 7	Equipment for harvesting and conservation	A
ISO/TC 23/SC 15	Machinery for forestry	A

Notes

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.