A.by conradson method only
B.by ramsbottom method only
C.either by conradson method or by ramsbottom method
D.by Pensky-Martens (closed) method
A.by conradson method only
B.by ramsbottom method only
C.either by conradson method or by ramsbottom method
D.by Pensky-Martens (closed) method