Columbia subject headings:
Agriculture--Arab countries--History.
Botanists--Arab countries--Biography.
Botany--Arab countries--History.
Scientists--Arab countries--Biography.
Zoology--Arab countries--History.
Harvard subject headings:
Agriculture--Arab countries--History.
Botanists--Arab countries--Biography.
Botany--Arab countries--History.
Scientists--Arab countries--Biography.
Zoology--Arab countries--History.
Princeton subject headings:
Agriculture--Arab countries--History.
Botanists--Arab countries--Biography.
Botany--Arab countries--History.
Scientists--Arab countries--Biography.
Zoology--Arab countries--History.