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| Position: Chinese Standard in English/JY 21-1979 |
| JY 21-1979 (English Version) | |||
| Standard No.: | JY 21-1979 | Status: | superseded |
| Language: | English | File Format: | |
| Word Count: | Price(USD): | 180.00 remind me the price change | |
| Implemented on: | Delivery: | ||
| Standard No.: | JY 21-1979 |
| Professional Classification: | JY Professional Standard - Education |
| Status: | superseded |
| Superseded by: | JY/T 0021-2011 |
| Superseded on: | 2013-7-11 |
| Language: | English |
| File Format: | |
| Price(USD): | 180.00 |