Zelma M.Kostelac;87;of Clinton Township;Mich.;formerly of Green Street;Belle Vernon;died Sunday;May 28;2000;at 4:10 p.m.at the home of her daughter. She was born Nov.2;1912;in Belle Vernon;a daughter of the late Charles and Maude Tharpe Hammitt. Mrs.Kostelac was a member of the First Christian Church of Belle Vernon;the Belle Vernon and Fayette City Golden Agers and the Belle Vernon Area Church Women. She resided in Michigan the past three years;and lived most of her adult life in Belle Vernon. Survivor include a daughter and son-in-law;Norma and Neal Keller;with whom she made her home;19 grandchildren;25 great-grandchildren;and nine great-great-grandchildren. In addition to her parents;she was preceded in death by her husband;Joseph Kostelac on April 17;1998;by a son;Charles DeHosse in 1988;two daughters;Lois Mazur in 1997 and Shirley Witmyer in 1992;and one great-granddaughter;Heidi Castor in 1999. Friends will be received Wednesday from 7 to 9 p.m.and Thursday from 2 to 4 and 7 to 9 p.m. in the FERGUSON FUNERAL HOME INC.;a member of the Golden Rule Firm;700 Broad ave.;Belle Vernon. Services will be held Friday at 11:30 a.m.in the funeral home;with the Rev.Donald Bowers officiating. Interment will follow in Belle Vernon Cemetery.