Title information : Economic and environmental studies Issue data : Opole Opole University, Faculty of Economics Year, No. : Vol. 16, no. 3, rok 2016 ISSN : ISSN 1642-2597, 2081-8319 Collective Record/Entry : \q12**1 0017963 \q Economic and environmental studies References : \q2479**1 stu_us_cat*0017964*xcla \q (1) - článok