十十萬個為什麽十萬個為什麽de M. Ilʹin, 董纯才MateriasScienceJuvenile literatureEdiciones (2)十萬個為什麽 (1945)Kang zhan shu dian · chino十萬個為什麽 (1939)Kai ming shu dian · chinoMás obras de M. IlʹinWhat time is it?19321100,000 pochemu100,000 pochemu19601100,000 whys100,000 whys1933