умбон . EKI Combined Dictionary 2026. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif/dlall/eki/%D1%83%D0%BC%D0%B1%D0%BE%D0%BD/1/rus (21.06.2026)
Translations
умбон . Arheoloogia terminibaas. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//arh/%D1%83%D0%BC%D0%B1%D0%BE%D0%BD/1/rus (21.06.2026)