Columbia subject headings:
Harvard subject headings:
Dead Sea (Israel and Jordan)
Ḥevrat ha-ashlag ha-Erets-Yiśreʼelit (Palestine)--History.
Mifʻale Yam ha-melaḥ--History.
Potash industry and trade--Dead Sea Region (Israel and Jordan)--History--20th century.
Potash industry and trade--Israel--History--20th century.
Princeton subject headings:
Dead Sea (Israel and Jordan)
Ḥevrat ha-ashlag ha-Erets-Yiśreʼelit (Palestine)--History.
Mifʻale Yam ha-Melaḥ--History.
Potash industry and trade--Dead Sea (Israel and Jordan)--History--20th century.
Potash industry and trade--Israel--History--20th century.