Columbia subject headings:
Desert reclamation--Middle East--Congresses.
Landscape architecture--Middle East--Congresses.
Plants, Ornamental--Middle East--Congresses.
Harvard subject headings:
Desert landscape architecture--Middle East--Congresses.
Desert reclamation--Middle East--Congresses.
Landscape architecture--Middle East.
Landscape design--Middle East--Congresses.
Plants, Ornamental--Middle East--Congresses.
Princeton subject headings:
Desert reclamation--Middle East--Congresses.
Landscape architecture--Middle East--Congresses.
Plants, Ornamental--Middle East--Congresses.