DEFSTAN 68-56/1(1978) : 1978
Superseded
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by
superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
POTASSIUM CRYOLITE
Superseded date
12-21-1990
Published date
01-12-2013
Publisher
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