This document discusses intraregional and interregional relations and input-output analysis. It covers input-output tables, agro-clusters in the Netherlands and how they are defined using value added from agriculture and agribusiness sectors. Interregional input-output models are discussed along with how they can be used to calculate regional multipliers. Methods for deriving regional input-output tables from national tables using location quotients are also presented. The document concludes by providing an application example of analyzing tourism in Slovenia.