Columbia subject headings:
Harvard subject headings:
Japanese language--Etymology
Japanese language--Grammar, Comparative--Lepcha.
Japanese--Origin
Lepcha language--Grammar, Comparative--Japanese.
Man'yōshū
Princeton subject headings:
Japanese language--Etymology.
Japanese language--Grammar, Comparative--Lepcha.
Japanese--Origin.
Lepcha language--Grammar, Comparative--Japanese.
Man'yōshū.