Pepliński B, Wajszczuk K, Majchrzycki D. The Labour Inputs Analysis in Developing Farms in their Gross Supply Aspect. jard [Internet]. 31Dec.2002 [cited 4May2024];1(343):137-46. Available from: http://www1.up.poznan.pl/jard/index.php/jard/article/view/1073