Columbia subject headings:
Lexicography--Congresses.
Lexicology--Congresses.
Harvard subject headings:
Indians of South America--Peru--Languages
Peru--Languages--Congresses.
Peru--Languages--Dialects--Congresses.
Spanish language--Dialects--Peru--Congresses.
Spanish language--Peru--Dialects--Congresses.
Princeton subject headings:
Indians of South America--Peru--Languages.
Peru--Languages--Congresses.
Spanish language--Dialects--Peru--Congresses.