id	keyword
brj-22381	litter
brj-22381	poultry litter
brj-22381	et al
brj-22381	pl1
brj-22381	doi
brj-22381	pl2
brj-22381	soil
brj-22381	characterization
brj-22381	production
brj-22381	content
brj-22381	energy
brj-22381	d.b
brj-22381	article
brj-22381	arkansas