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Unesco General Conference

G. C. ยท U. G.

titleISBN-13
(ISBN-10)		year of publication
Records of the General Conference: 25th Session978-92-3-102726-0
(92-3-102726-3)		1991
Records of the General Conference: 25th Session978-92-3-102707-9
(92-3-102707-7)		1990

Ungaretti Giuseppe