Home›Browse›conceptual system🌐EnglishEnglishDeutschEspañolFrançaisItalianoNederlandsPolskiPortuguêsSvenskaTiếng ViệtTürkçeРусскийالعربيةفارسی中文日本語EntityQ3622126· pop 7· linked from 77 articlesconceptual systemSign in to saveAlso known as non-physical systemsystem composed of non-physical objects, i.e. ideas or conceptsAvailable in 7 languagesالعربيةNederlandsPolskiSlovakSvenskaفارسیvia Wikidata sitelinks · CC0