id	keyword
american_scientific_journal-9952	carbon
american_scientific_journal-9952	species
american_scientific_journal-9952	trees
american_scientific_journal-9952	biomass
american_scientific_journal-9952	commune
american_scientific_journal-9952	total
american_scientific_journal-9952	mbunya
american_scientific_journal-9952	yambi
american_scientific_journal-9952	spp