Columbia subject headings:
Harvard subject headings:
Japanese language--Readers--History--20th century--Sources.
Japanese language--Readers--History--Sources.
Japanese language--Study and teaching (Elementary)--Micronesia--History--20th century--Sources.
Japanese language--Study and teaching (Elementary)--Micronesia--History--Sources.
Princeton subject headings:
Japanese language--Readers--History--Sources.
Japanese language--Study and teaching (Elementary)--Micronesia--History--Sources.