Sitipob Kakaew และ Kitjapat Phuvoravan. (2013) Behavior of cold-formed steel built-up column using channel sections with different weld spacing. Kasetsart University:ม.ป.ท.Sitipob Kakaew และ Kitjapat Phuvoravan. 2013. Behavior of cold-formed steel built-up column using channel sections with different weld spacing. ม.ป.ท.:Kasetsart University;Sitipob Kakaew และ Kitjapat Phuvoravan. Behavior of cold-formed steel built-up column using channel sections with different weld spacing. ม.ป.ท.:Kasetsart University, 2013. Print.