Regional planning, the region-past, present & future, a digest of the policies, principles, procedure and findings of the Regional Planning Federation of the Philadelphia Tri-state District.
| Erakunde egilea: | |
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| Formatua: | Liburua |
| Hizkuntza: | English |
| Argitaratua: |
Philadelphia
The Federation
1931.
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| Gaiak: |