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Info: New comment - [interpark, 2020-04-06, 기적의 인도 베다수학 계산법. 1(미국 수학 교과서의 개념을 바꾼) (미국 수학 교과서의 개념을 바꾼), http://book.interpark.com/product/BookDisplay.do?_method=detail&sc.prdNo=332139251, 잘받았습니다 감사합니다, null]
