Stoilova, I., Popivanova, N., Petrova, N. Concerning the prevalence of hepatits a viral infection. Sofia: 2002 5-7,.
Stoilova, I., Popivanova, N., Petrova, N. Concerning the prevalence of hepatits a viral infection. Sofia: 2002 5-7,.
Stoilova, I., Popivanova, N., Petrova, N. (2002) Concerning the prevalence of hepatits a viral infection, Sofia: 5-7,.
Stoilova, I., Popivanova, N., & Petrova, N. (2002). Concerning the prevalence of hepatits a viral infection. Problems of infectious and parasitic diseases, 30 (1), 5-7.
Stoilova I, Popivanova N, Petrova N. Concerning the prevalence of hepatits a viral infection. Problems of infectious and parasitic diseases. 2002; 30(1): 5-7.
