Seminar on forest seed and tree improvement - Denmark, 24 Jul - 13 Aug 1966.

breeding methods certification des semences ciencias forestales dunas dune dunes economia economics economie especies fitomejoramiento forest plantations foresterie forestry forestry policies geographical distribution gestion graine management pepiniere peuplement semencier plant breeding plant nurseries procedencia provenance recherche research rodal semillero sandy soils seed seed certification seed stands seeds semence semilla semillas sol sableux species suelo arenoso viveros windbreak trees