Rudziński, Grzegorz. 2017. “Polish Language As an Environment of Teaching Mathematics to Foreigners in the Light of Experience of Working on the Manual for Foreigners”. Acta Universitatis Lodziensis. Kształcenie Polonistyczne Cudzoziemców 24 (December):213-27. https://doi.org/10.18778/0860-6587.24.16.