id	keyword
esrj-21201	gravity
esrj-21201	anomalies
esrj-21201	data
esrj-21201	anomaly
esrj-21201	cameroon
esrj-21201	point
esrj-21201	areas
esrj-21201	bouguer
esrj-21201	prediction
esrj-21201	interpolation