Home›Browse›Four-sides model🌐EnglishEnglishDeutschEspañolNederlandsPolskiTürkçeРусскийالعربيةEntityQ2523430· pop 8· linked from 11 articlesFour-sides modelSign in to savecommunication modelAvailable in 7 languagesDeutschРусскийالعربيةPolskiTürkçeUkrainianvia Wikidata sitelinks · CC0