PN G04524-1992
Hard coal Method for the petrographic analysis Determination microscopically reflectance of vitrinite

Standard No.

PN G04524-1992

Release Date

1992

Published By

PL-PKN

Latest

PN G04524-1992

PN G04524-1992 history

• 1992 PN G04524-1992 Hard coal Method for the petrographic analysis Determination microscopically reflectance of vitrinite