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(c) The compilation of other monetary and non-monetary indicators, in particular for modes 2 and 4 (i.e., the number of mode 2 persons travelling abroad and purchasing services and the number of mode 4 persons crossing borders and temporarily abroad in the context of services contracts) is an important information requirement. The related challenges and good practices are described in chapter 16, which provides, in particular, an overview of data variables on the movements of natural persons under mode 4 of services supply, describes the uses of various data sources in the compilation of the variables and compares different sources and guidelines on the organization of the data compilation process. The chapter also provides information on the possibilities offered by the linking of trade and business statistics, and a list of sectoral services statistics useful for a full analysis of the international supply of services.
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