Todorov, V. ., M. . Boycheva, and M. Boichev. “BLOOD GROUP AFFILIATION OF THE CONTEMPORARY BULGARIAN POPULATION FROM THE AREA OF SHUMEN: BLOOD GROUP AFFILIATION OF THE CONTEMPORARY BULGARIAN POPULATION FROM THE AREA OF SHUMEN”. JOURNAL SCIENTIFIC AND APPLIED RESEARCH, vol. 21, no. 1, Mar. 2023, pp. 5-8, doi:10.46687/jsar.v21i1.312.