Pittsburgh Pa.--Bishop Dionisije of Libertyville, Ill., head of the Serbian Orthodox Church of the United States and Canada (center), presided at a one-day meeting here of the Church's clergymen. Shown with him are: the Very Rev. Firmilijan Ocokoljich, Secretary of the Church (left); and the Rev. Velimer P. Kovacevich, pastor of St. Sava Serbian Orthodox Church, where the meeting was held.