TCVN 5857-1994
Precious stone.Testing refractive index

Standard No.

TCVN 5857-1994

Release Date

2008

Published By

VN-TCVN

Latest

TCVN 5857-1994

TCVN 5857-1994 history

• 2008 TCVN 5857-1994 Precious stone.Testing refractive index