Grupa Wydawnicza Harmonia (harmonia.edu.pl) is an online store in the Jobs & Education niche, based in Poland, created in Jan 2019. It had 17,557 visits in Aug 2026 (SimilarWeb-measured), down 4% on the month before. Its closest competitors in the AdLibrarySpy index, by niche and traffic, are SITA (sita.pl), EDUSPORT School (edusport.school) and Mu Alpha Theta (mualphatheta.org).
Every answer comes from the AdLibrarySpy index, SimilarWeb and the store itself; anything not measured is left out. Article version: /answers/store/harmonia.edu.pl
Measured by SimilarWeb for harmonia.edu.pl.
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