Błażejczyk-Majka L, Kala R. THE INFLUENCE OF TECHNICAL PROGRESS ON THE MARGINAL PRODUCTIVITY OF FACTORS AND THEIR SUBSTITUTION IN FRENCH AGRICULTURE IN 1980–1999. SECTORAL APPROACH. aspe [Internet]. 2004Dec.30 [cited 2024Jul.3];3(2):5-15. Available from: https://js.wne.sggw.pl/index.php/aspe/article/view/3626