Sawczuk P. Exemption from VAT for Training, Advisory and Related Services Provided by Subcontractors of Beneficiaries Implementing Projects Financed from the European Social Fund. br [Internet]. 2017 Feb. 16 [cited 2024 Nov. 8];14(4):57-64. Available from: https://czaz.akademiazamojska.edu.pl/index.php/br/article/view/464