Sunti Tirapat. (2003) Corporate diversification in Thailand. Chulalongkorn University:ม.ป.ท.Sunti Tirapat. 2003. Corporate diversification in Thailand. ม.ป.ท.:Chulalongkorn University;Sunti Tirapat. Corporate diversification in Thailand. ม.ป.ท.:Chulalongkorn University, 2003. Print.