id	keyword
american_scientific_journal-1556	capital
american_scientific_journal-1556	firms
american_scientific_journal-1556	structure
american_scientific_journal-1556	leverage
american_scientific_journal-1556	study
american_scientific_journal-1556	oil
american_scientific_journal-1556	ghana
american_scientific_journal-1556	debt
american_scientific_journal-1556	theory