Primary school in Ostrołęka
Elementary school
Papiernicza 1, 07-410 Ostrołęka, Poland
Generala Augusta Emila Fieldorfa "Nila" 4/6, 07-410 Ostrołęka, Poland
Henryka Sienkiewicza 15, 07-410 Ostrołęka, Poland
Mazurska 28, 07-401 Laskowiec, Poland
Szkolna 4, 07-405 Troszyn, Poland
Primary school
Władysława Broniewskiego 17, 07-415 Olszewo-Borki, Poland