Columbia subject headings:
Earth sciences--Egypt--Bibliography.
Harvard subject headings:
Geology--Egypt--Western Desert Region--Bibliography.
Geology--Egypt--Western Desert--Bibliography.
Hydrology--Egypt--Western Desert--Bibliography.
Mines and mineral resources--Egypt--Western Desert--Bibliography.
Soils--Egypt--Western Desert--Bibliography.
Princeton subject headings:
Geology--Egypt--Western Desert--Bibliography.
Hydrology--Egypt--Western Desert--Bibliography.
Mines and mineral resources--Egypt--Western Desert--Bibliography.
Soils--Egypt--Western Desert--Bibliography.