어음 전자어음

https://joosungkim232323.wordpress.com/2015/03/16/%ea%b9%80%ec%a3%bc%ec%84%b1nm%e1%86%9e%e1%86%9e1515-3%e1%86%9e904%e1%86%9e%e1%86%9e-%ea%b9%80%ec%a3%bc%ec%84%b1%e1%86%9e33907-%ea%b9%80%ec%a3%bc%ec%84%b123620506-1683421/