id	keyword
esrj-27715	esr
esrj-27715	dating
esrj-27715	dose
esrj-27715	enamel
esrj-27715	tooth
esrj-27715	sample
esrj-27715	age
esrj-27715	radiation
esrj-27715	electron
esrj-27715	resonance
esrj-27715	spin