The Philippine telecom industry implementing number portability for landline and cellular phones in the Philippines
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| Fformat: | Llyfr |
| Iaith: | English |
| Cyhoeddwyd: |
Quezon City College of Business Administration, University of the Philippines
c2006
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| Cyfres: | UPCBA professorial chair lecture : no.06-02
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| Pynciau: |