Institut de populiculture, union allumettiere, s.a. Grammont - L'activite pendant les annees 1965-1967.

breeding methods clone clones dendrometria dendrometrie enfermedades de las plantas especies fitomejoramiento forest mensuration grafting greffage hybridation hybridization injerto maladie des plantes pepiniere plant breeding plant diseases plant nurseries populus resistance to injurious factors species viveros