Breeding pest-resistant trees : proceedings - N.A.T.O. and N.S.F. Advanced Study Institute on Genetic Improvement for Disease and Insect Resistance of Forest Trees (1964 Aug. 30 to Sep.11 : University Park, Pennsylvania).; Gerhold, Henry D.; North Atlantic Treaty Organization; National Science Foundation (U.S.); Pennsylvania State University. School of Forest Resources (Oxford : Symposium Publications Division, Pergamon Press, 1966)
Keywords: Trees -- Breeding -- Congresses; Trees -- Disease and pest resistance -- Congresses