Columbia subject headings:
Aḥdut ha-ʻavodah (Palestine)--Congresses.
Labor Zionism--Palestine--Congresses.
Harvard subject headings:
Aḥdut ha-ʻavodah (Palestine)--Congresses.
Labor Zionism--Palestine--Congresses.
Princeton subject headings:
Aḥdut ha-ʻavodah (Palestine)--Congresses.
Labor Zionism--Palestine--Congresses.