[100자평] Problem Solving Strategies (한국어판) : 문제적 해결 전략

Problem Solving Strategies (한국어판) : 문제적 해결 전략 - Problem Books In Mathematics
Arthur Engel 지음, 정호영 감수 / 도비출판사 / 2008년 9월

Its translation wrecked the contents horribly. I almost got a cancer reading it. You will see, not only incomprehensible sentences, but also wrongly put numbers. Really, I couldn‘t understand just typing ˝n˝ after reading ˝n-1˝ and etc. Not worthy a penny.