Fiń, A. 2020. An Ethnic Relations between Immigrant-based Groups in the Light of Florian Znaniecki’s Theory. (Ethnic Relations as a Type of Social Relations: Case Study on Polish-Ukrainian Relations in Diaspora Situation). Italian Sociological Review. 10, 2s (Jul. 2020), 513. DOI:https://doi.org/10.13136/isr.v10i2s.361.