| • filter bed | |
| निस्यंदन: filter filtering filtration seepage | |
| संस्तर: bed calcic horizon diagnostic surface horizons | |
निस्यंदन संस्तर अंग्रेज़ी में
[ nisyamdan samstar ]
| • filter bed | |
| निस्यंदन: filter filtering filtration seepage | |
| संस्तर: bed calcic horizon diagnostic surface horizons | |
