| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| GB 4637-1984 | English | 199 |
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Recording and reproducing head gaps for monophonic and three magnetic sound records on 35mm motion-picture film--Positions and width dimensions
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GB 4637-1984
| Obsolete |
GB 4637-1984
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