id	keyword
american_scientific_journal-1339	workers
american_scientific_journal-1339	health
american_scientific_journal-1339	toluene
american_scientific_journal-1339	exposure
american_scientific_journal-1339	shoes
american_scientific_journal-1339	level
american_scientific_journal-1339	place
american_scientific_journal-1339	risk
american_scientific_journal-1339	working
american_scientific_journal-1339	people
american_scientific_journal-1339	research
american_scientific_journal-1339	concentration
american_scientific_journal-1339	hours
american_scientific_journal-1339	total