| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| GB 5439-1985 | English | 239 |
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Days<=2
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The recording and exchanging of sound broadcasting programmes on stereophonic magnetic tape
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GB 5439-1985
| Obsolete |
GB 5439-1985
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