The Effect of Grooves on Initial Peak Load and Plastic Work for Nonmetallic Tubes Statically
al-Maǧallaẗ al-ʻirāqiyyaẗ li-l-handasaẗ  al-madaniyyaẗ/Al-Maǧallaẗ al-ʻirāqiyyaẗ li-l-handasat al-madaniyyaẗ