Add punctuation: On 15 July 1997 the Commission adopted a White Paper on the sectors and activities excluded from the Directive on working time COM97 334 final not published in the Official Journal in which it presented the characteristics of each sector and the various possible approaches
On 15 July 1997 the Commission adopted a White Paper on the sectors and activities excluded from the Directive on working time [COM(97) 334 final - not published in the Official Journal], in which it presented the characteristics of each sector and the various possible approaches.