🌐EnglishEnglishDeutschEspañolFrançaisItalianoNederlandsالعربية中文日本語EntityQ1291844· pop 6· linked from 274 articlesEdward C. T. ChaoAlso known as E. C. T. Chao, Chao EC, Edward Ching-Te Chao, Edward C.T. Chao, Edward C T Chao, ECT Chao, E.C.T. Chao, E C T ChaoU. S. Geological Survey (1919–2008)Available in 6 languagesDeutsch中文ItalianoالعربيةUkrainianvia Wikidata sitelinks · CC0Connectionssilicon dioxideEntityUnited States Geological SurveyEntityCategories1919 births2008 deaths20th-century American geologistsBarringer Medal winnersChinese emigrants to the United StatesPlanetary scientistsUnited States Geological Survey personnelUniversity of Chicago alumni