Columbia subject headings:
Harvard subject headings:
Common good--Congresses.
Gifts--Congresses.
Gifts--Economic aspects--Congresses.
Gifts--Philosophy--Congresses.
Gifts--Political aspects--Congresses.
Gifts--Religious aspects--Christianity--Congresses.
Princeton subject headings:
Common good--Congresses.
Gifts--Congresses.
Gifts--Economic aspects--Congresses.
Gifts--Philosophy--Congresses.
Gifts--Political aspects--Congresses.
Gifts--Religious aspects--Christianity--Congresses.