id	keyword
brj-25102	wood
brj-25102	et al
brj-25102	thermal
brj-25102	heat
brj-25102	treatment
brj-25102	doi
brj-25102	spruce
brj-25102	properties
brj-25102	modification
brj-25102	heat treatment
brj-25102	sound
brj-25102	samples
brj-25102	spruce wood
brj-25102	modulus
brj-25102	values
brj-25102	wood samples
brj-25102	increase