The Philippine Air Lines story
| Egile nagusia: | |
|---|---|
| Formatua: | Liburua |
| Hizkuntza: | English |
| Argitaratua: |
Manila
Institute of Public Administration, University of the Philippinnes
1962.
|
| Saila: | Occasional papers University of the Philippines. Institute of Public Administration
P-6, C-4 |
| Gaiak: |