Ostromęcki, Artur, Dariusz Zając, and Andrzej Mantaj. “Determinants of in Production Factors As Indicators of Farm Structure Transformations in Highly Fragmented Agriculture”. Olsztyn Economic Journal 7, no. 1 (June 30, 2012): 107–119. Accessed May 17, 2024. https://czasopisma.uwm.edu.pl/index.php/oej/article/view/3410.