XII PREFACE 



The scientific proceedings of the 'Oholo' conference are now 

 being pubHshed for the first time in book form. The Editors 

 gladly take this first opportunity to express their thanks to the 

 participants in these conferences and to the organizing com- 

 mittees for their generous gifts of time and effort which made 

 this pubhcation possible. 



The Board of Editors hereby gratefully acknowledges the 

 help of Mrs. B. Wolman in the preparation of the monograph 

 and of Mr. L. Hirschberg-Bar-Sinai in the editing of the Round 

 Table discussion. 



