Columbia subject headings:
Arabic language--Glossaries, vocabularies, etc.
Arabic language--Textbooks for foreign speakers--German.
Harvard subject headings:
Arabic language--Glossaries, vocabularies, etc.
Arabic language--Textbooks for foreign speakers--German.
Princeton subject headings:
Arabic language--Glossaries, vocabularies, etc.
Arabic language--Textbooks for foreign speakers--German.
Arabic language--Word frequency.