Internationally dangerous forest tree diseases - International Union of Forestry Research Organizations. Working Group on International Cooperation in Forest Disease Research; International Union of Forestry Research Organizations. Congress 1961 : Vienna) (Washington, D.C. : U.S. Dept. of Agriculture, Forest Service, 1963)
Supplement to Section 24-14, Proceedings of the 13th Congress, International Union of Forestry Research Organizations, Vienna 1961.
Includes bibliographies.
Keywords: Trees -- Diseases and pests