00735nam a2200181 i 450000100060000000300090000600500170001500700030003200800410003511100900007624500890016626000590025530000220031471000470033685200320038399900170041595201210043246046ES-MaACL20250828083958.0t|030327s1957    sz           ||||1| fre d2 aConférence Internationale de l'Instruction Publique (n20ª. d1957.cGinebra)915910aXX Conférence Internationale de l'Instruction Publique, Genève, 1957b: nº 187.  aGenève : bBureau International d'Education, c1957.  a174 p. ; c24 cm.20aOficina Internacional de Educación96022  aES-MaACLjC-15342 bR.42846  c46046d46046  00104070aATENEOMbATENEOMcFICHd2008-01-17eSCl0oC-15342p1048442r2023-02-23 00:00:00w2023-02-23yMONOGRAFIA