A manual on the hydraulic ram for pumping water.
| Autor principal: | |
|---|---|
| Format: | Llibre | 
| Idioma: | English | 
| Publicat: | London
          Intermediate Technology
    
        c1982. | 
| Matèries: | 
| Autor principal: | |
|---|---|
| Format: | Llibre | 
| Idioma: | English | 
| Publicat: | London
          Intermediate Technology
    
        c1982. | 
| Matèries: |