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Wikipedia definition
1. Armstrong Siddeley AdderThe Armstrong Siddeley Adder was an early British turbojet engine developed by the Armstrong Siddeley company and first run in November 1948.
Read “Armstrong Siddeley Adder” on English Wikipedia
Read “アームストロング・シドレー アダー” on Japanese Wikipedia
Read “Armstrong Siddeley Adder” on DBpedia

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