فهرس المقالات Actors In Biomass حرية الوصول المقاله صفحة الملخص نص كامل 1 - Theoretical Approach of A Possible Value-Added Chain in the Biomass Industry in Rural Areas Giving the Example of A Hungarian Microregion Zoltán Bujdosó Csaba Patkós Tibor Kovács Zsolt Radics