Columbia subject headings:
Information resources--Handbooks, manuals, etc.
Information resources--Japan--Handbooks, manuals, etc.
Legal research--Japan--Handbooks, manuals, etc.
Harvard subject headings:
Information resources--Handbooks, manuals, etc.
Information resources--Japan--Handbooks, manuals, etc.
Princeton subject headings:
Reference books--Bibliography.
Reference services (Libraries)--Handbooks, manuals, etc.
Reference services (Libraries)--Problems, exercises, etc.