Nowak A, Krukowski A, Wójcik E. THE CHANGES IN PRODUCTIVITY OF PRODUCTION FACTORS IN COMMERCIAL FARMS IN POLAND IN 2004 AND 2012. aspe [Internet]. 2015 Sep. 30 [cited 2024 Nov. 22];14(3):105-1. Available from: https://aspe.sggw.edu.pl/article/view/434