Le Dig, F.T. The conservation of forest genetic resources - case histories from Canada, Mexico and the United States / F.T. Le Dig, J.J. Vargas-Hernández, K.H. Johnsen. -- Obr. -- Res. Lit.

In Journal of forestry. -- Bethesda : Society of American Foresters, 1998. -- ISSN 0022-1201. -- Roč. 96, č. 1 (1998), s. 32-41

I. Vargas-Hernández, J.J.
II. Johnsen, K.H.
III. Journal of forestry. -- Roč. 96, č. 1 (1998), s. 32-41

575+575+630*2
ZV001