coal deposits occur in layers each such layer is called a ''seam ''
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السابق
- coal deposits occur in layers each such ..
- of movement or travel, directly; without..
- want; desire (used to form polite reques..
- the physical or chemical change in the c..
- someone or something that obtains; inher..
- hazreti ısa'nın doğumunu simgeleyen tabl..
- to be defeated or thwarted (by); to suff..
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