| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| HG/T 2911-1997 | English | 599 |
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Days<=3
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Photography. Source document microfilms. Determination of ISO speed and ISO average gradient
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HG/T 2911-1997
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HG/T 2911-1997
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