Guley О, Vasyuchenko P. Conceptual model of the formation of the concept "a steam boiler" and training-oriented classification of the features of this model. JPED [Internet]. 2019 Dec. 4 [cited 2024 May 6];(64):16-28. Available from: https://jped.uipa.edu.ua/index.php/JPED/article/view/291