id	keyword
brj-24388	density
brj-24388	paper
brj-24388	refining
brj-24388	plane
brj-24388	material
brj-24388	properties
brj-24388	efficiency
brj-24388	strain
brj-24388	factor
brj-24388	paper density
brj-24388	stress
brj-24388	paperboard
brj-24388	fiber