| • energy cascade | |
| ऊर्जा: energy electricity power life elan bombarding | |
| सोपान: staircase stair grade episode rung steps stepping | |
ऊर्जा सोपान अंग्रेज़ी में
[ urja sopan ]
| • energy cascade | |
| ऊर्जा: energy electricity power life elan bombarding | |
| सोपान: staircase stair grade episode rung steps stepping | |
