TY  - BOOK
ED  - Unesco.
TI  - Address by Federico Mayor at the ceremony for presentation of the 1991 Sultan Qaboos Prizefor enviromental preservation: beig awarded for the firts time
AV  - AS4 U5.3 1991
PY  - 1991///
CY  - [Ginebra]
PB  - UNESCO
KW  - Unesco
ER  -