id	keyword
gc-1003	unit
gc-1003	kostadinovica
gc-1003	fig
gc-1003	section
gc-1003	sandstone
gc-1003	flysch
gc-1003	krstić
gc-1003	beds
gc-1003	carboniferous
gc-1003	facies
gc-1003	lamination
gc-1003	sedimentary
gc-1003	characteristics
gc-1003	plant
gc-1003	succession
gc-1003	serbia
gc-1003	doi