Columbia subject headings:
Harvard subject headings:
Croatian language--Orthography and spelling.
Croatian language--Writing.
Serbian language--Orthography and spelling.
Serbian language--Writing.
Slavic languages--History.
Slavic languages--Written Slavic.
Princeton subject headings:
Croatian language--Orthography and spelling.
Croatian language--Writing.
Serbian language--Orthography and spelling.
Serbian language--Writing.
Slavic languages--History.
Slavic languages--Written Slavic.