000
00291nam a2200121Ia 4500
082
_a
371.207
_b
ORI
245
_a
Indicators of performance of educational systems
260
_a
Paris:
_b
OECD,
_c
1973
300
_a
104p.
546
_a
eng
650
_a
Educational planning
_9
196272
942
_c
BK
999
_c
24558
_d
24558