Staff Sergeant Robert S.Drdul;417 Pearl Ave.;Monessen;died in Zweibrucken;Germany;on Sunday;June 10;1984. He was 24. Mr.Drdul was born in North Charleroi on Nov.10;1959;and was a member of St.Sebastian Roman Catholic Church in Belle Vernon. He lived in Germany for three years where he served with the U.A.Air Force. Survivors include his wife;Toni Valdez Drdul of Germany;his mother;Mrs.Dolores Hauser of Monessen;his father;Stephen Drdul of Charleroi;a brother;Ronald of Monessen;and two sisters;Mrs.Stanley (Karen) Marinos of Monessen and Mrs.John (Linda) Palmer of Belle Vernon. Friends will be received Saturday from 7 to 9 p.m. and Sunday from 2 to 4 and 7 to 9 p.m. at the Shelby D.Ferguson Funeral Home;700 Broad Ave.;Belle Vernon. Services will be held Monday;June 18;at 9:30 a.m. at the funeral home followed by a Mass Of Christian Burial at St.Sebastian Roman Catholic Church;Belle Vernon. Interment will be at the Belle Vernon Cemetery. Shelby D.Ferguson;funeral director;is in charge of arrangements.