Strzębicka, A., & Strzębicki, D. (2003). MARKETING SYSTEM FUNCTIONS OF PRODUCERS’ GROUPS (PROFISAD LTD CASE STUDY). Acta Scientiarum Polonorum. Oeconomia, 2(1), 135-144. Retrieved from https://js.wne.sggw.pl/index.php/aspe/article/view/3578