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бедрок

s
acentos
geol. shelf; bed-rock; bedding rock; bedrock; ledge rock; shelf
miner. placer rock bed (MichaelBurov); placer bedrock (MichaelBurov); placer bedding rock (MichaelBurov); placer rock floor (MichaelBurov)
minería, antic. subterrane