Błażejczyk-Majka, Lucyna, and Radosław Kala. “THE INFLUENCE OF TECHNICAL PROGRESS ON THE MARGINAL PRODUCTIVITY OF FACTORS AND THEIR SUBSTITUTION IN FRENCH AGRICULTURE IN 1980–1999. SECTORAL APPROACH”. Acta Scientiarum Polonorum. Oeconomia 3, no. 2 (December 30, 2004): 5–15. Accessed April 28, 2024. https://aspe.sggw.edu.pl/article/view/950.