The purpose of this contribution is to discuss what roles the different economic sectors. and in particular services activities (the tertiary sector) play in regional develop ment. understood as growth in production. incomes and employment in weakly developed regions. https://www.hindigyanvishv.com/top-save-Peerless-Boiler-Repair-Part-50549-Limit-Honeywell-Pa404A1009-Unit-Pack-Only-hot-value/