[Petur Kh. Nikolov; 60th anniversary of his birth and 32nd anniversary of his medical, pedagogical, scientific and social work].
D000846:Anniversaries and Special Events; D049672:History, 19th Century; D049673:History, 20th Century; D036801:Parturition; D012586:Science; D012947:Social Work
Petur Kh. Nikolov; kum 60-godishninata ot razhdaneto mu i 32 godini ot lekarskata, pedagogichnata, nauchnata i obshchestvenata mu deinost.