id	keyword
esrj-27300	esr
esrj-27300	dating
esrj-27300	dose
esrj-27300	enamel
esrj-27300	tooth
esrj-27300	sample
esrj-27300	age
esrj-27300	radiation
esrj-27300	electron
esrj-27300	resonance
esrj-27300	spin