Terrestrial Ecozones, Ecoregions and Ecodistricts for the Provinces of British Columbia, Alberta, Saskatchewan and Manitoba
Agriculture and Agri-Food Canada
Agriculture and Agri-Food Canada, Research Branch
ecozone, ecoregion, ecoprovince, ecodistrict, Manitoba, Alberta, Saskatchewan, British Columbia
Ecological Stratification Working Group. 1995. A National Ecological Framework for Canada. Agriculture and Agri-Food Canada, Research Branch, Centre for Land and Biological Resources Research and Environment Canada, State of the Environment Directorate, Ecozone Analysis Branch, Ottawa/Hull. Report and national map at 1:7,500,000 scale.