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GB/T 6948-1998
GB/T 6948-1998 Microscopical determination of the reflectance of vitrinite in coal
General Product Information
| Document Type | National standards |
|---|---|
| Standard Status | Replaced |
| Standard Code | GB/T 6948-1998 |
| CCS | \nCoal rock |
| ICS | \nCoal |
| Implement Date | 1999-05-01 |
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$ 54