Reference	Title	Category
ISO/TC 23	Tractors and machinery for agriculture and forestry	A
ISO/TC 23/SC 2	Common tests	A
ISO/TC 23/SC 3	Safety and comfort	A
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
ISO/TC 23/SC 17	Manually portable (hand-held) powered lawn and garden equipment and forest machinery	A
ISO/TC 23/SC 18	Irrigation and drainage equipment and systems	A
ISO/TC 23/SC 19	Agricultural electronics	A
ISO/TC 110/SC 4	Rough-terrain trucks	A
ISO/TC 127	Earth-moving machinery	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.