Columbia subject headings:
Khmer language--Grammar, Comparative--Thai.
Khmer language--Lexicology.
Harvard subject headings:
Khmer language--Foreign elements--Thai
Khmer language--Grammar, Comparative--Thai.
Khmer language--Influence on Thai
Khmer language--Lexicology.
Thai language--Foreign elements--Khmer
Thai language--Influence on Khmer.
Princeton subject headings: