01200nam--2200397---450-99000172097020331620050919133316.0000172097USA01000172097(ALEPH)000172097USA0100017209720040603d1984----km-y0itay0103----bafreCHa|||||||001yyObserver pour eduquerJean-Marie de Ketelepreface de Marcel PosticBernePeter Langc1984214 p.ill.21 cmExplorationRecherches en sciences de l'education2001ExplorationRecherches en sciences de l'education2001001-------2001EducazioneStudiDidatticaMetodi370KETELE,Jean Marie : de527095POSTIC,MarcelITsalbcISBD990001720970203316II.4. Coll.18/ 2(VI B coll 49/2)19527 L.M.VI B collBKUMASIAV61020040603USA010927COPAT69020050919USA011333Observer pour eduquer947503UNISA