ACKNOWLEDGEMENTS 



The thorough and unselfish efforts of Ruby Johnson and Mildred Medlin 

 made possible the visit of the Soviet scientists to the U.S. and the 

 symposium. Nikki Vick's professional talents of editing and Elaine 

 Fitzback's assistance with the translations have made possible the publi- 

 cation of the Proceedings. All of the participants gave freely of their 

 time to prepare and present the papers. 



As in any cooperative effort, many people share the success of this 

 effort. 



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