32 U.S. DEPT. OF AGRICULTURE MISC. PUB. 9 39 



Summary of Conferences Abroad 



In 1959-60 Professor A. J. Riker consulted with authorities in 

 North America, Europe, Southeast Asia, and the South Pacific on 

 what should be done about internationally dangerous tree diseases. 

 He went on a Haight Travelling Fellowship from the University of 

 Wisconsin. His study was a part of the work of Section 24 of the 

 International Union of Forest Research Organizations. A summary 

 of the results of his discussions provides the basis for the fourth and 

 last session of our Working Group. 





