1.
BACHEV HI, IVANOV B. Factors for inclusion of wastewater treatment sludgein agri-food chain in Bulgaria. J. Econ. Lib. [Internet]. 2021 Oct. 29 [cited 2024 Jul. 4];8(3):107-29. Available from: https://journals.econsciences.com/index.php/JEL/article/view/2232