أرسل هذا في رسالة قصيرة: STRUCTURAL BEHAVIOUR AND DESIGN OF CONCRETE ENCASED STEEL COMPOSITE COLUMNS WITH HIGH STRENGTH MATERIALS

 __   __   _    _    _    _     _____     _____   
 \ \\/ // | || | || | |  | ||  |  ___||  |__  //  
  \   //  | || | || | |/\| ||  | ||__      / //   
  / . \\  | \\_/ || |  /\  ||  | ||__     / //__  
 /_//\_\\  \____//  |_// \_||  |_____||  /_____|| 
 `-`  --`   `---`   `-`   `-`  `-----`   `-----`