id	keyword
american_scientific_journal-1350	land
american_scientific_journal-1350	fragmentation
american_scientific_journal-1350	food
american_scientific_journal-1350	sub
american_scientific_journal-1350	study
american_scientific_journal-1350	county
american_scientific_journal-1350	production
american_scientific_journal-1350	technology
american_scientific_journal-1350	crop
american_scientific_journal-1350	research
american_scientific_journal-1350	ugunja
american_scientific_journal-1350	sciences
american_scientific_journal-1350	land fragmentation
american_scientific_journal-1350	security