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| Position: Chinese Standard in English/YD 172-1978 |
| YD 172-1978 (English Version) | |||
| Standard No.: | YD 172-1978 | Status: | superseded |
| Language: | English | File Format: | |
| Word Count: | Price(USD): | remind me the price change | |
| Implemented on: | Delivery: | ||
| Standard No.: | YD 172-1978 |
| Status: | superseded |
| Superseded by: | YD/T 172-1994 Technological Document Formats for Posts and Telecommunications Industry |
| Superseded on: | 1994-12-1 |
| Language: | English |
| File Format: |