id	keyword
essd-1144	wood
essd-1144	waste
essd-1144	wood waste
essd-1144	sawmills
essd-1144	ondo
essd-1144	energy
essd-1144	state
essd-1144	nigeria
essd-1144	akure
essd-1144	et al
essd-1144	figure
essd-1144	sawdust
essd-1144	log
essd-1144	ondo state