[1]
Zascerinska, J., Aļeksejeva , L., Zascerinskis, M., Gukovica, O. y Aleksejeva, A. 2021. THE IMPACT OF COVID-19 ON THE IMPROVEMENT OF TEACHING SKILLS ON PROBLEM-BASED LEARNING (PBL). International Journal for 21st Century Education. 7, 1 (feb. 2021), 42–59. DOI:https://doi.org/10.21071/ij21ce.v7i1.13074.