Saad Theyyab Faris, Jabbar Kasim Jabbar. Rotation of Local Coordinate for Analysis Drawing Pprocess of Metal Polygonal Section By (Fem) . DJES [Internet]. 2008 Sep. 1 [cited 2024 Nov. 21];1(1):137-49. Available from: https://djes.info/index.php/djes/article/view/716