id	keyword
iberica-558	research
iberica-558	argument
iberica-558	information
iberica-558	claim
iberica-558	types
iberica-558	papers
iberica-558	support
iberica-558	structure
iberica-558	introduction
iberica-558	theory
iberica-558	patterns
iberica-558	objective
iberica-558	concept
iberica-558	sociology
iberica-558	literature
iberica-558	model
iberica-558	analysis