id	keyword
esrj-79728	226ra
esrj-79728	river
esrj-79728	water
esrj-79728	irquis
esrj-79728	portete
esrj-79728	concentration
esrj-79728	trout
esrj-79728	mining
esrj-79728	sampling
esrj-79728	matrices
esrj-79728	levels
esrj-79728	rainbow
esrj-79728	ecuador