id	keyword
american_scientific_journal-8805	groundwater
american_scientific_journal-8805	erbil
american_scientific_journal-8805	basin
american_scientific_journal-8805	study
american_scientific_journal-8805	wells
american_scientific_journal-8805	kriging
american_scientific_journal-8805	data
american_scientific_journal-8805	levels
american_scientific_journal-8805	journal
american_scientific_journal-8805	area
american_scientific_journal-8805	sciences