[75th Anniversary of birth and 45th anniversary of scientific and social work of academician prof. Dr. St. Angelov].
D000846:Anniversaries and Special Events; D049672:History, 19th Century; D049673:History, 20th Century; D036801:Parturition; D012586:Science; D012947:Social Work
BIOGRAPHIES
Po sluchai 75-godishninata ot rozhdenieto i 45-godishna nauchna i obshchestvena deinost na akad. prof. d-r St. Angelov.