Zwolińska-Ligaj M. AREAS OF BUSINESS ACTIVITY IN THE DEVELOPMENT OF ENVIRONMENTALLY VALUABLE ECO-PRODUCTS - AS EXEMPLIFIED BY THE LUBLIN VOIVODESHIP. aspe [Internet]. 2015 Sep. 30 [cited 2024 Nov. 22];14(3):157-66. Available from: https://aspe.sggw.edu.pl/article/view/438