The role and importance of Philippine interisland shipping and trade 1953-1954
| Egile nagusia: | |
|---|---|
| Formatua: | Liburua |
| Hizkuntza: | English |
| Argitaratua: |
[University Park
Dept. of Geography, College of Mineral Industries, Pennsylvania State University]
1957.
|
| Saila: | Contract, Geography Branch U.S. Office of Naval Research
Nonr 656[08] |
| Gaiak: |