| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| LY/T 1231-1999 | English | 70 |
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Determination of ammonium nitrogen in forest soil
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LY/T 1231-1999
| Obsolete |
LY/T 1231-1999
|