00458nam a2200157 i 450000100060000000300090000600500170001500700030003200800410003510000200007624500860009626000540018230000260023665000170026285200210027985170ES-MaACL20230906175209.0t|041125s1916    xxu          |||| | eng d1 aJones, W. H. S.10aHow we learn b: a short primer of scientific method for boys /cby W.H.S. Jones.  aCambridge : bCambridge University Press, c1916.  aVII, 64 p. ; c20 cm.04aAprendizaje.  aES-MaACLjF-5978