id	keyword
american_scientific_journal-6643	vermicompost
american_scientific_journal-6643	soil
american_scientific_journal-6643	substrate
american_scientific_journal-6643	plants
american_scientific_journal-6643	proportions
american_scientific_journal-6643	vol
american_scientific_journal-6643	fruit
american_scientific_journal-6643	cadmium
american_scientific_journal-6643	water
american_scientific_journal-6643	research