id	keyword
american_scientific_journal-6492	thin
american_scientific_journal-6492	films
american_scientific_journal-6492	energy
american_scientific_journal-6492	journal
american_scientific_journal-6492	sulphide
american_scientific_journal-6492	iron
american_scientific_journal-6492	pbs
american_scientific_journal-6492	cus
american_scientific_journal-6492	nigeria
american_scientific_journal-6492	research
american_scientific_journal-6492	lead