THE USE OF MARKETING RESEARCH IN QUALITY MANAGEMENT OF ADMINISTRATIVE SERVICES Authors V. Mazur https://orcid.org/0000-0002-8133-7355 Y. Yarova https://orcid.org/0000-0003-0334-7264 DOI: https://doi.org/10.32702/2306-6814.2026.10.334 Downloads pdf (Українська) Published 2026-05-21 Issue No. 10 (2026): ІНВЕСТИЦІЇ: ПРАКТИКА ТА ДОСВІД Section Статті