Julia Duda;75;of Fairhope;Belle Vernon;died Tuesday;Jan.28;1997;in Mercy Hospital;Pittsburgh.  Born June 9;1921;in Jefferson;Greene County;she was the daughter of the late John and Susie Guba Barno.  Mrs.Duda was a member of St.Sebastian Roman Catholic Church;Belle Vernon.  In addition to her parents;she was preceded in death by three brothers;George;Frank and John Barno.  Surviving are her husband;George Duda;two sons;George Duda Jr.of Manassas;Va.and Charles Duda of Potomac;Md.;one daughter;Betty Duda of Belle Vernon;two brothers;Andrew Barno of the state of Indiana and Charles Barno of Jefferson;four sisters;Marge Murray of Jefferson;Helen DeStefon of Charleroi and Ann Clipper and Mary Matyr;both of Ohio;and four grandchildren.  Friends will be received Wednesday from 2 to 4 and 7 to 9 p.m.and Thursday until 9:30 a.m.in the Howard W.McCrory Funeral Home;Fayette City.  A prayer service will be held Thursday at 9:30 a.m.in the funeral home;followed by Funeral Mass at 10 a.m.in St.Sebastian Roman Catholic Church;Belle Vernon.  Interment will follow in Belle Vernon Cemetery.  Arrangements are being handled by the Howard W.McCrory Funeral Home.