Kopiński, Jerzy. “THE COMPARISON OF CHANGES IN THE IMPLEMENTATION OF PRODUCTION AND ENVIRONMENTAL AIMS OF AGRICULTURE IN SELECTED GROUPS OF VOIVODSHIPS”. Acta Scientiarum Polonorum. Oeconomia 16, no. 2 (June 30, 2017): 87–95. Accessed April 4, 2025. https://aspe.sggw.edu.pl/article/view/331.