🌐EnglishEnglishDeutschPolskiРусскийEntityQ4335387· pop 10opokaAlso known as opukacarbonate-siliceous marine sedimentary rockAvailable in 10 languagesРусскийAzerbaijaniBelarusianCzechKazakhKyrgyzLithuanianPolskiSlovakUkrainianvia Wikidata sitelinks · CC0