id	keyword
american_scientific_journal-6671	area
american_scientific_journal-6671	land
american_scientific_journal-6671	use
american_scientific_journal-6671	soil
american_scientific_journal-6671	hillside
american_scientific_journal-6671	journal
american_scientific_journal-6671	occupation
american_scientific_journal-6671	growth
american_scientific_journal-6671	vegetation
american_scientific_journal-6671	risk
american_scientific_journal-6671	population
american_scientific_journal-6671	engineering
american_scientific_journal-6671	research
american_scientific_journal-6671	system