JY 0009-1990
Quality inspection provisions and test methods for the electronic teaching instruments (English Version)
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JY 0009-1990
Standard No.
JY 0009-1990
Language
Chinese,
Available in English version
Release Date
1990
Published By
Professional Standard - Education
Latest
JY 0009-1990
JY 0009-1990 history
1990
JY 0009-1990
Quality inspection provisions and test methods for the electronic teaching instruments
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