окалина . Materjalitehnika terminibaas. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//mtr/%D0%BE%D0%BA%D0%B0%D0%BB%D0%B8%D0%BD%D0%B0/1/rus (12.08.2026)
окалина . Materjalitehnika terminibaas. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//mtr/%D0%BE%D0%BA%D0%B0%D0%BB%D0%B8%D0%BD%D0%B0/1/rus (12.08.2026)