At the joint invitation of Smith and Mount Holyoke Colleges, the United Nations Council of Harvard will participate in a seven college conference today, to plan a miniature United nations session to be held at Wellesley next spring.

The group will send W. Baird Bryant '50, ite vice-chairman, to Mount Holyoke to join in talks with representatives from Vassar, Wellesley, Smith, Mount Holyoke, Yale, and Columbia.

Today's conferees are expected to produce concrete plans for the weekend at Wellesley, Stephen M. Schwebel '50, chairman of the Harvard group, said yesterday. When plans are finally mapped out, almost 50 colleges may take part.