41 Publication of texts and illustrations of a scientific or technical nature in the nature of drawings, plans, maps, sketches, tables and three-dimensional representations, including in electronic form, other than publicity texts and other than for advertising purposes; publication of texts, other than publicity texts; writing of articles for professional journals other than for advertising or publicity; editing of written texts; publication of printed matter and printed publications; on-line electronic publishing of books and periodicals; editing of publications; publication of printed matter, also in electronic form, other than for advertising purposes; publication of printed matter, other than publicity texts, in electronic form; publication of printed matter; arranging, conducting and organization of symposiums in the field of health economics, economic impact valuation, research in labor market and social policy; arranging and conducting of conferences in the field of health economics, economic impact valuation, research in labor market and social policy; arranging and conducting of lectures in the field of health economics, economic impact valuation, research in labor market and social policy; arranging, conducting and organizing of seminars in the field of health economics, economic impact valuation, research in labor market and social policy; arranging and conducting of conferences and seminars in the field of health economics, economic impact valuation, research in labor market and social policy; arranging, conducting and organization of conferences in the field of health economics, economic impact valuation, research in labor market and social policy; arranging, conducting and organization of congresses in the field of health economics, economic impact valuation, research in labor market and social policy; arranging of conferences in the field of health economics, economic impact valuation, research in labor market and social policy