@article{10_14708_wm_v6i2_2416,
     author = {S. Straszewicz},
     title = {Zwi\k{a}zki arytmetyki z algebr\k{a} w nauczaniu dzieci do lat 15},
     journal = {Wiadomo\'sci Matematyczne},
     pages = { 249--265},
     year = {1963},
     volume = {6},
     number = {2},
     doi = {10.14708/wm.v6i2.2416},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/wm.v6i2.2416/}
}