| • plane of reference • reference level | |
| निर्देश: directive designation say rubric precept | |
| तल: bed scale degree Base surface plane underside | |
निर्देश तल अंग्रेज़ी में
[ nirdesh tal ]
| • plane of reference • reference level | |
| निर्देश: directive designation say rubric precept | |
| तल: bed scale degree Base surface plane underside | |
