Legislative principles of soil conservation.
| Huvudupphovsman: | |
|---|---|
| Materialtyp: | Bok | 
| Språk: | English | 
| Publicerad: | Rome
          Food and Agriculture Organization of the United Nations
    
        [c1972]. | 
| Serie: | Food and Agriculture Organization of the United Nations. Soils bulletin
              15 | 
| Ämnen: |