000
00289nam a2200121 a 4500
005
20210219154602.0
008
030902s2000 mx r 000 0 spa d
035
_a
UPN01000128368
049
_a
SEP
050
4
_a
LC5309 U55
_b
C5301-8
245
0
0
_a
Ciencia de la educaciĆ³n
905
_a
Libro
999
_c
100547
_d
100547