Eesti NSV Haridusministeerium2025-02-062025-02-061948ARH PT-4220https://hdl.handle.net/10062/106961etAttribution-NonCommercial-NoDerivs 3.0 Estoniahttps://creativecommons.org/licenses/by-nc-nd/3.0/ee/haridusõpilasedplangidOther