3 1 10 3er. ciclo EGB / Elena Beatriz Adragna , Graciela _Teresa Bellio de Lauge, Jose Luis Cavallotto, Omar Jose Adragna Adragna, Elena Beatriz Additional Author Bellio de Lauge, Graciela _Teresa Additional Author Cavallotto, Jose Luis Additional Author Adragna, Omar Jose Additional Author Ceruti, Marcelo Javier Additional Author mixed material 9706131965 Mexico Harla 1997 3er. ciclo EGB / Elena Beatriz Adragna , Graciela _Teresa Bellio de Lauge, Jose Luis Cavallotto, Omar Jose Adragna Adragna, Elena Beatriz Additional Author Bellio de Lauge, Graciela _Teresa Additional Author Cavallotto, Jose Luis Additional Author Adragna, Omar Jose Additional Author mixed material 9706131957 Mexico Harla 1997 ciencias naturales : 3er ciclo EGB / / Estela Ledesma de Fea ... [et al.] Adragna, Elena Beatriz Additional Author Cavallotto, Jose Luis Additional Author Adragna, Omar Jose Additional Author Bellio de Lauge, Graciela Teresa Additional Author mixed material 9706131957 Mexico D.F. Harla 2001