Marcus Wallenberg Symposium (1994 Stockholm, Sweden)
T. C. Nieman
Southern Forest Tree Improvement Conference (1977)
Edmar Ramos de Siqueira
Timothy John Mullin
Leroy C Johnson
Gaylord K. Parks
E. K. Morgenstern
Joint Meeting of the North American Forest Biology Workshop and the Western Forest Genetics Association (1998 : University of Victoria)
Conifer Tree Seed in the Inland Mountain West Symposium (1985 Missoula, Mont.)
International Symposium on Population Genetics of Forest Trees (1990 Corvallis, Or.)
United States. Forest Service
Csaba Mátyás
Bruce J. Zobel
G. E. Rehfeldt
Jean Beaulieu
Symposium on Variation, Breeding, and Conservation of Tropical Forest Trees University of Oxford 1975.
J. Burley