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| Author | ITU |
|---|---|
| Editor | ITU |
| Document type | Standard |
| Format | File |
| ICS | 13.020.20 : Environmental economics
|
| Year | 2016 |
| Document history | |
| Country | International |
| Keyword | CCITT Y.4903;CCITT Y.4903/L.1603;ITU-T Y.4903;ITU-T 4903;4903;ITU-T Y.4903/L.1603 |