Columbia subject headings:
Harvard subject headings:
Activity programs in education--Congresses.
Agriculture, Cooperative--Egypt--Ismailia--Congresses.
Education, Cooperative--Egypt--Ismailia--Congresses.
Princeton subject headings:
Activity programs in education--Congresses.
Agriculture, Cooperative--Egypt--Ismailia--Congresses.
Education, Cooperative--Egypt--Ismailia--Congresses.