"Union of Doctors (Fond 274, Opis 1)"@eng . . "1 microfilm reel, 35 mm"@eng . . . "Contains correspondence with the branches of the union in Sliven (Bulgaria) (file 62), Svogen (file 70), and Khaskova (file 79), including topics such as prohibiting Jewish doctors from having private practices."@eng . . "Union of Doctors (Fond 274, Opis 1)"@eng . "Arrangement of the files is numerical"@eng . .