RT Journal Article SR Electronic T1 Propagation Protocol for Aspen using Root Cuttings JF Native Plants Journal JO NATIVE PLANTS JOURNAL FD University of Wisconsin Press SP 129 OP 131 DO 10.3368/npj.4.2.129 VO 4 IS 2 A1 Luna, Tara YR 2003 UL http://npj.uwpress.org/content/4/2/129.abstract AB