The rural land classification program of Puerto Rico.
| Erakunde egilea: | |
|---|---|
| Formatua: | Liburua |
| Hizkuntza: | English |
| Argitaratua: |
Evanston, Ill.
s.n.
1952.
|
| Saila: | Northwestern University studies in geography, no. 1
|
| Gaiak: |