Showing 31 results
Archival DescriptionPhotographs of agricultural scenes in Ontario, Saskatchewan, Alberta, and Nova Scotia
Photographs of agricultural scenes in Ontario, Saskatchewan, Alberta, and Nova Scotia
Photographs of hydro power scenes in Quebec and Ontario
Photographs of hydro power scenes in Quebec and Ontario
Photographs of copper-zinc and sulfur dioxide devegetation
Photographs of copper-zinc and sulfur dioxide devegetation
Effects of smelter pollutans on forest leaf litter decomposition near a nickel - copper smelter at Sudbury, Ontario. by B. Freedman and T.C. Hutchinson.
Effects of smelter pollutans on forest leaf litter decomposition near a nickel - copper smelter at Sudbury, Ontario. by B. Freedman and T.C. Hutchinson.
Variation in distribution and abundance of four sympatric species of snakes at Amherstburg, Ontario : [manuscript]
Variation in distribution and abundance of four sympatric species of snakes at Amherstburg, Ontario : [manuscript]
Population trends of various species of birds wintering in southern Ontario : [manuscript]
Population trends of various species of birds wintering in southern Ontario : [manuscript]
Food and feeding behavior of sympatric snakes at Amherstburg, Ontario : [manuscript]
Food and feeding behavior of sympatric snakes at Amherstburg, Ontario : [manuscript]
Pollutant inputs from the atmosphere and accumulations in soils and vegetation near a nickel-copper smelter at Sudbury, Ontario, Canada : [manuscript and correspondence]
Pollutant inputs from the atmosphere and accumulations in soils and vegetation near a nickel-copper smelter at Sudbury, Ontario, Canada : [manuscript and correspondence]
Smelter pollution near Sudbury, Ontario, Canada, and effects on forest litter decomposition :
Smelter pollution near Sudbury, Ontario, Canada, and effects on forest litter decomposition :
Movements of sympatric species of snakes at Amherstburg, Ontario : [manuscript]
Movements of sympatric species of snakes at Amherstburg, Ontario : [manuscript]
Long-term effects of smelter pollution at Sudbury, Ontario, on forest community composition : [manuscript and correspondence]
Long-term effects of smelter pollution at Sudbury, Ontario, on forest community composition : [manuscript and correspondence]
Population size and structure of four sympatric species of snakes at Amherstburg, Ontario : [manuscript]
Population size and structure of four sympatric species of snakes at Amherstburg, Ontario : [manuscript]
Evaluation of loading of sulphate and heavy metals along a S-SE transect centering on Sudbury, Ontario ; Evaluation of sulphate and heavy metal loading rates and total sulphation as affected by forest canopies near Sudbury, Ontario ; Effects of smelter emissions on surrounding forest plant communities near Sudbury, Ontario : [manuscript and correspondence]
Evaluation of loading of sulphate and heavy metals along a S-SE transect centering on Sudbury, Ontario ; Evaluation of sulphate and heavy metal loading rates and total sulphation as affected by forest canopies near Sudbury, Ontario ; Effects of smelter emissions on surrounding forest plant communities near Sudbury, Ontario : [manuscript and correspondence]
Population trends in water fowl wintering in the Toronto region, 1929-1976 : [manuscript]
Population trends in water fowl wintering in the Toronto region, 1929-1976 : [manuscript]
Photographs of birds at the Headland site, Toronto
Photographs of birds at the Headland site, Toronto
Photographs of trees at Minesing Swamp, near Barrie, Ontario
Photographs of trees at Minesing Swamp, near Barrie, Ontario
Melanistic Butler's garter snakes (Thamnophis butleri) at Amherstburg, Ontario : [manuscript]
Melanistic Butler's garter snakes (Thamnophis butleri) at Amherstburg, Ontario : [manuscript]
Waterfowl populations in the vicinity of the Leslie Street headland, Toronto, Ontario, October 1975 to September 1976 : [manuscript]
Waterfowl populations in the vicinity of the Leslie Street headland, Toronto, Ontario, October 1975 to September 1976 : [manuscript]
Photographs of acid rain evidence at Killarney, Ontario
Photographs of acid rain evidence at Killarney, Ontario
Photographs of Sudbury scenes
Photographs of Sudbury scenes
Photographs of tailings sites around Sudbury
Photographs of tailings sites around Sudbury
Photographs of Great Grey, Snowy, and Barred owls
Photographs of Great Grey, Snowy, and Barred owls
Photographs of flora at Crawford Lake, Burlington, Ontario
Photographs of flora at Crawford Lake, Burlington, Ontario
Photographs of urban scenes in Halifax, Toronto, and Vancouver
Photographs of urban scenes in Halifax, Toronto, and Vancouver
Photographs of snakes at Amherstburg, Ontario, and the Allegheny Plateau, New York
Photographs of snakes at Amherstburg, Ontario, and the Allegheny Plateau, New York
Photographs of flora at Camp Naivelt, Brampton, Ontario
Photographs of flora at Camp Naivelt, Brampton, Ontario
Photographs of flora and fungi along the Magnetawan River, Ontario
Photographs of flora and fungi along the Magnetawan River, Ontario
Photographs of flora at Lake Joseph and Parry Sound, Ontario
Photographs of flora at Lake Joseph and Parry Sound, Ontario
Photographs of birds, mammals, insects, and amphibians
Photographs of birds, mammals, insects, and amphibians
Photographs of the flora of southern Ontario
Photographs of the flora of southern Ontario
Notes relating to a lecture on Haliburton acid rain
Notes relating to a lecture on Haliburton acid rain