Grzelak M, Cika N, Roszko-Wójtowicz E. INNOVATION ACTIVITIES OF INDUSTRIAL ENTERPRISES IN POLAND IN THE LIGHT OF PUBLIC STATISTICS. aspe [Internet]. 2017Dec.30 [cited 2024Dec.22];16(4):61-0. Available from: https://js.wne.sggw.pl/index.php/aspe/article/view/4312