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asphalt, resin and paraffin deposits (1) |
hydrocarbon systems (1) |
magnet (1) |
magnetic treatment (1) |
oil (1) |
well (1) |
asphalt, resin and paraffin deposits (1) |
hydrocarbon systems (1) |
magnet (1) |
magnetic treatment (1) |
oil (1) |
well (1) |