Title: Biblio RTF Export
Author: Biblio 7.x

T. F. H.  Allen and Hoekstra, T. W., ?The confusion between scale-defined levels and conventional levels of organization in ecology?, Journal of Vegetation Science, vol. 1, pp. 5 - 12, 1990.

L.  Arriaga, Maya, Y., Diaz, S., and Cancino, J., ?Association between cacti and nurse perennials in a heterogeneous tropical dry forest in northwestern Mexico?, Journal of Vegetation Science, vol. 4, pp. 349 - 356, 1993.