Agronomic and economic correlation study, supporting activity for the land classification works, on the Upper Pampanga River Project, service area.
| Institutionella upphovsmän: | , |
|---|---|
| Materialtyp: | Bok |
| Språk: | engelska |
| Publicerad: |
Quezon City
[s.n.]
1971.
|
| Ämnen: |