id	keyword
esrj-99194	runoff
esrj-99194	watershed
esrj-99194	drainage
esrj-99194	area
esrj-99194	basin
esrj-99194	land
esrj-99194	soil
esrj-99194	analysis
esrj-99194	surface
esrj-99194	study
esrj-99194	mexico
esrj-99194	value
esrj-99194	number
esrj-99194	cover