Promsak Sa-nguanthammarong. 1999. A study of abrasion resistance of silica-filled natural rubber and its improvement. Faculty of Graduate Studies, Mahidol University;
Promsak Sa-nguanthammarong. (1999) A study of abrasion resistance of silica-filled natural rubber and its improvement . Mahidol University/Bangkok.
Promsak Sa-nguanthammarong. A study of abrasion resistance of silica-filled natural rubber and its improvement. . Bangkok:Mahidol University, 1999.
Promsak Sa-nguanthammarong. (1999) A study of abrasion resistance of silica-filled natural rubber and its improvement . Mahidol University/Bangkok.