20.29 出版物方面出现差异主要是关于环境问题和本次级方案经管的多边环境协定的指南、政策简报和良好做法出版物造成的，原因在于多边环境协定缔约方会议的周期以及其他进程的高级别会议，那些会议要求在各自会前印发此类出版物。
20.29 The variance in publications is driven mainly by guidance, policy briefs and good practices publications on environmental issues and multilateral environmental agreements administered by the subprogramme, owing to the cycles of conferences (meetings) of the parties to the multilateral environmental agreements, as well as high-level meetings of other processes, which requested the issuance of those publications before the respective meetings.