JY 38-1984
Electromagnetic call timer (English Version)
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JY 38-1984
Standard No.
JY 38-1984
Language
Chinese,
Available in English version
Published By
Professional Standard - Education
Status
Withdraw
Replace By
JY 38-1979
Latest
JY 38-1979
JY 38-1984 history
1970
JY 38-1984
Electromagnetic call timer
0000
JY 38-1979
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