CSN 42 3871-1961
Pt-lr 25
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CSN 42 3871-1961
Standard No.
CSN 42 3871-1961
Release Date
1961
Published By
CZ-CSN
Status
Withdraw
Replace By
CSN 42 3871-1976
Latest
CSN 42 3871-1976
CSN 42 3871-1961 history
1976
CSN 42 3871-1976
Platinum-iridium PtIr25
1961
CSN 42 3871-1961
Pt-lr 25
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