id	keyword
gc-1047	trilobites
gc-1047	doi
gc-1047	ordovician
gc-1047	et al
gc-1047	czech
gc-1047	budil
gc-1047	geol
gc-1047	prague
gc-1047	fatka
gc-1047	basin
gc-1047	middle
gc-1047	formation
gc-1047	republic