The impact of relationship marketing on customer retention in the pharmaceutical sector \ 2026-02-15T21:10:22+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Salhab, Hanadi Akram (Amman Arab University, college of business, Departmant of Finance,c2013)