Investigacion agraria : Sistemas y recursos forestales NUMBER@1 -LRB- NUMBER@2 -RRB- : NUMBER@3 -LRB- NUMBER@4 -RRB- However , some of these trees , notably those with the ORGANIZATION@1 pumila in their ancestry , will probably have a comparatively small mature size and lack the forms for which the iconic American Elm and MISC@1 were prized .

Investigacion agraria : Sistemas y recursos forestales NUMBER@1 -LRB- NUMBER@2 -RRB- : NUMBER@3 -LRB- NUMBER@4 -RRB- .
