Arief, D., 		Badri, M., 		Dalil, M., 		Reforiandi, A., & 		Permana, A.
(2020).
 Calibration Of Vickers Hardness Test PT.Tenaris Seamless Pipe Indonesia Jaya Cilegon Using Standar Blok.
<em>Journal Of Ocean, Mechanical And Aerospace -Science And Engineering-, 64</em>(3), 81-87.
doi:10.36842/jomase.v64i3.203