Harding, Lee E. and Allison Alder,
1999 (in preparation) Environmental Compendium for the Columbia
Basin Trust. Website material - Living Landscapes Project of the
CBTrust and the Royal British Columbia Museum.
Harding, L. and McCullum, E., Editors.
1994. Chapter 17 in Biodiversity in British Columbia, Our Changing
Environment. Environment Canada, Canadian Wildlife Service.
Howarth, F,G., 1991. Environmental
impacts of classical biological control. Annual Review of Entomology
36:485-509.
White, D.J. and E. Haber, 1992.
Invasive Plants of Natural Habitats in Canada, Part 1: Wetland species.
Report prepared for Canadian Wildlife Service.
