Martha Krill of 1106 Henry St.;Belle Vernon;died Thursday;June 18;1987;at 1 p.m.in Haven Crest Nursing Home;Carroll Twp.  She was 84.   Mrs.Krill was born Jan.7;1903;in Wick Haven;a daughter of the late Michael and Theodosia Monita Shlanta.  She was a member  of Holy Resurrection Orthodox Church;Belle Vernon;and the St.Barbara’s Guild of the church.  Mrs.Krill had lived in Belle Vernon for over 70 years;and had been proprietor of Krill’s Market in North Belle Vernon for 50 years.  In addition for her parents;she was preceded in death by her husband;Michael Krill;in 1932;a son;Clement;in 1930;five brothers;John;Elmer;Nicholas;Clement and Martin Shlanta;and a sister;Mary Obsnarsky.  Survivors include two sons;Joseph Krill of Belle Vernon and Eugene Krill of Monongahela;one sister;Myra Stepanovich of Weirton;W.Va.;six grandchildren and two great-grandchildren.  Friends will be received Saturday and Sunday from 2 to 4 and 7 to 9 p.m.in the Shelby D.Ferguson Funeral Home;700 Broad Ave.;Belle Vernon.  Funeral services will be held Monday;June 22;at 9 a.m.in Holy Resurrection Orthodox Church;Belle Vernon;with the Very Rev.John Kluchko officiating.  Burial will be in Belle Vernon Cemetery.  Parastas will be held Sunday evening before the end of visiting hours.  Shelby D.Ferguson;funeral director;is in charge of arrangements.