000
002800000a22001210004500
008
140223b1981 xxu||||| |||| 00| 0 eng d
041
_a
English
100
_a
:UNESCO
245
_a
COLLECTION OF BASIC TEXTS
260
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PARIS
_b
UNESCO
_c
1981
650
_a
_a
906
_a
:UNESCO
999
_c
136462
_d
136462