id	keyword
esrj-21094	case
esrj-21094	groundwater
esrj-21094	egypt
esrj-21094	nile
esrj-21094	sohag
esrj-21094	ppm
esrj-21094	aquifer
esrj-21094	awlad
esrj-21094	salinity
esrj-21094	area
esrj-21094	land
esrj-21094	valley
esrj-21094	salameh
esrj-21094	said
esrj-21094	sediments