11 May 2017 Proposal for Supplement 1 to the original version of Regulation No. 143
WP.29/2017/66
WP.29/2017/66 2017-05-11
13 January 2017 Proposal for amendments to ECE/TRANS/WP.29/GRPE/2017/4 on Heavy Duty Dual-Fuel Engine Retrofit Systems (LG Europe and OICA)
GRPE-74-25
GRPE-74-25 2017-01-13