id	keyword
american_scientific_journal-4753	site
american_scientific_journal-4753	average
american_scientific_journal-4753	soils
american_scientific_journal-4753	values
american_scientific_journal-4753	cm3
american_scientific_journal-4753	ketcho
american_scientific_journal-4753	banfeko
american_scientific_journal-4753	bakoye
american_scientific_journal-4753	cameroon