id	keyword
esrj-21110	darb
esrj-21110	arbaein
esrj-21110	darb el
esrj-21110	el arbaein
esrj-21110	aquifer
esrj-21110	groundwater
esrj-21110	vol
esrj-21110	fig
esrj-21110	enero
esrj-21110	sandstone
esrj-21110	egypt
esrj-21110	group
esrj-21110	loss