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   제 목   accidental invention    상 태  
   작성자   robin    등록일   2017-10-10
   내 용

Today I studied about accidental invention. Ruth was invention chocolate cookie.


Today, I studied about the Accidental Invention. One of the famous example of accidental invention is the Chocolate Cookie which was invented by Ruth Graves Wakefield.


"Keep up the excellent work."


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