id	keyword
crln-21406	data
crln-21406	library
crln-21406	information
crln-21406	index
crln-21406	university
crln-21406	guide
crln-21406	reference
crln-21406	libraries
crln-21406	pais
crln-21406	directory
crln-21406	american
crln-21406	book
crln-21406	sources
crln-21406	subject
crln-21406	bases
crln-21406	science