id	keyword
american_scientific_journal-6270	dry
american_scientific_journal-6270	mussel
american_scientific_journal-6270	sediment
american_scientific_journal-6270	green
american_scientific_journal-6270	thailand
american_scientific_journal-6270	season
american_scientific_journal-6270	water
american_scientific_journal-6270	sites
american_scientific_journal-6270	levels
american_scientific_journal-6270	angsila
american_scientific_journal-6270	study