PROBLEM ASPECTS OF IMPLEMENTATION OF THE QUANTITY COST TECHNIQUES BY «PREVENTION, APPRAISAL AND FAILURE» MODEL AT CONTRACTORS. Ekon. čas. Volins. nac. unìv. ìm. Lesì Ukraïnki [Internet]. 2018 Sep. 30 [cited 2024 Nov. 22];3(15):94-101. Available from: https://echas.vnu.edu.ua/index.php/echas/article/view/372