Nowak, A., Krukowski, A., & Wójcik, E. (2015). THE CHANGES IN PRODUCTIVITY OF PRODUCTION FACTORS IN COMMERCIAL FARMS IN POLAND IN 2004 AND 2012. Acta Scientiarum Polonorum. Oeconomia, 14(3), 105–115. Retrieved from https://aspe.sggw.edu.pl/article/view/434