Columbia subject headings:
Khoisan languages.
Linguistics--Africa.
Harvard subject headings:
!Xõ language--Dictionaries--English.
English language--Dictionaries--!Xõ.
Tswana language--Dictionaries--!Xõ.
Princeton subject headings:
!Xõ language--Dictionaries--English.
Dictionaries.
English language--Dictionaries--!Xõ.
Tswana language--Dictionaries--!Xõ.