00676cam a22001451a 4500040001200000082002600012245005300038260007400091300002500165490007400190500013600264650001000400710006000410710006000470  cNSySU-F  a632 U.S 1963 A040 Or.00aInternationally dangerous forest tree diseases /  aWashington, D.C. :bU.S. Dept. of Agriculture, Forest Service,c1963.  avi, 122 p. ;c24 cm.1 aMiscellaneous publication / United States Department of Agriculture ;  aSupplement to Section 24-14, Proceedings of the 13th Congress, International Union of Forestry Research Organizations, Vienna 1961. 0aTrees2 aInternational Union of Forestry Research Organizations.2 aInternational Union of Forestry Research Organizations.