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| reflection The return of waves or particles from surfaces on which they are incident | |||
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frithchaitheamh : 3 фразы в 1 тематике |
| Землеведение | 3 |
|
| |||
| reflection The return of waves or particles from surfaces on which they are incident | |||
|
frithchaitheamh : 3 фразы в 1 тематике |
| Землеведение | 3 |