TY - GEN A1 - Smith, David Eugene (1860-1944) A1 - Wentworth, George Albert (1835-1906) PB - Ginn and Company L2 - http://pbc.up.krakow.pl/Content/1919 KW - arytmetyka T1 - Arithmetic. Book 3 UR - http://pbc.up.krakow.pl/dlibra/publication/edition/1919 ER -