The vascular system in the axis of Dracaena fragrans (Agavaceae). 2. Distribution and development of secondary vascular tiisue.

0 Zimmermann, MH Tomlinson, PB 1970 The vascular system in the axis of Dracaena fragrans (Agavaceae). 2. Distribution and development of secondary vascular tiisue. J. Arnold Arbor. 51 478-91