id	keyword
american_scientific_journal-4265	energy
american_scientific_journal-4265	consumption
american_scientific_journal-4265	petroleum
american_scientific_journal-4265	sector
american_scientific_journal-4265	co2
american_scientific_journal-4265	mining
american_scientific_journal-4265	quarrying
american_scientific_journal-4265	year
american_scientific_journal-4265	industry
american_scientific_journal-4265	fuel
american_scientific_journal-4265	pakistan