30-se, yŏngŏp ponbujang sinhwa
By: Yi Hŭi-gu chiŭm
Edition: 1-pʻan
Publisher: Tʻomji Medikʻŏm
Published: 2004
Place of publication: Sŏul-si
Language: kor
Number of pages: 276
Subjects: Sales executives; Biography; Success in business