An ecological study of wildlife and fisheries in the Pembina and Sturgeon River Basins - Alberta. Dept. of Environment. Water Resources Division, (Government of Alberta, 1971)

An ecological survey in northern Michigan - Adams, Charles C. (Charles Christopher), 1873 -1955 (Wynkoop Hallenbeck Crawford co., state printers, 1906)

An ecological survey of Isle Royale, Lake Superior - Adams, Charles C. (Charles Christopher), 1873 -1955 (Wynkoop Hallenbeck Crawford Co., State Printers, 1909)

An ecological survey of the Porcupine Mountains - Darlington, Henry T. (Henry Townsend) 1875 -1964 (Darlington, 1923)

Ecological types of the upper Gunnison Basin : review draft - Johnston, Barry C. (U.S. Department of Agriculture, Forest Service, Grand Mesa-Uncompahgre-Gunnison National Forests, 1997)

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The ecology and status of Mountain caribou and caribou range in Central British Columbia - Bloomfield, Michael Irwin. (University of Alberta, Dept. of Animal Science, 1979)

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Ecology of feral horses in western Alberta - University of Alberta. (University of Alberta, 1978)

Ecology of Shiras moose in Montana : big game research projects W-98-R and W-120-R, January 4, 1965-December 31, 1973 : final report - Montana. Department of Fish; Game (The Department, 1974)

Ecology of the aspen parkland of western Canada in relation to land use - Bird, Ralph Durham, 1901 -1972 (Research Branch, Canada Dept. of Agriculture, 1961)

Ecology of the Columbian ground squirrel in the Sheep River region - University of Alberta. Department of Zoology. (1962)

Ecology of the muskrat (Ondatra zibethicus spatulatus) on the Peace-Athabasca Delta, Wood Buffalo National Park - Westworth, David Arthur. (University of Alberta, Dept. of Zoology, 1974)

The ecology of the plants native to Dutchess County, New York - Roberts, Edith Adelaide, 1881 - (Conservation Committee of the Garden Club of America, 1924)

Economics of forestry : a bibliography for the United States and Canada, 1953-1954 - Berry, Margaret W. (Forest Service, U.S. Dept. of Agriculture, 1953)

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Edward Gillett's eleventh annual catalogue of North American wild flowers, orchids, alpine, shrubs, aquatic, climbers and bog plants, rare ferns, etc. for 1888 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Edward Gillett, 1888)

Edward Gillett's twelfth annual catalogue of North American wild flowers, orchids, shrubs, climbers : alpine, aquatic, and bog plants, rare ferns, etc. for 1889 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Edward Gillett, 1889)

The effect of abnormal weather conditions during 1934 on vegetation in the northeast - Northeastern Forest Experiment Station (Radnor, Pa.) ([Northeastern Forest Experiment Station], 1935)

The effect of burning and mowing on Festuca hallii (Vasey) Piper (Festuca scabrella Torr.) - University of Alberta. (University of Alberta, 1980)

Effect of cold storage on development of suckers on aspen root cuttings - Intermountain Forest; Range Experiment Station (Ogden, Utah) (Dept. of Agriculture, Forest Service, Intermountain Forest and Range Experiment Station, 1978)

The effect of fire on grasslands in the Alberta aspen parkland - University of Alberta. Dept. of Plant Science. (University of Alberta, Dept. of Plant Science, 1972)

The effect of fire on Merriam's turkey brood habitat in southeastern Montana - Montana. Department of Fish, Wildlife,; Parks (Montana Dept. of Fish, Wildlife & Parks, 1992)

Effect of grazing upon aspen reproduction - Sampson, Arthur W. (Arthur William), 1884 -1967 (U.S. Dept. of Agriculture, 1919)

Effect of mowing on carbohydrate reserves and regeneration of western snowberry (Symphoricarpos occidentalis Hook.) - Adams, Barry. (1983)

The effect of seston on the life history, growth, and distribution of Neureclipsis bimaculata (Trichoptera : Polycentropodidae) in a boreal river - Richardson, John, 1946 - (University of Alberta, Dept. of Zoology, 1983)

The Effect on vegetation and soil temperature of logging flood-plain white spruce - United States. Forest Service. (U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, 1988)

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Effects of acid deposition on soils in Alberta - Alberta Government/Industry Acid Deposition Research Program. (Acid Deposition Research Program, 1987)

Effects of fire on the subalpine range of Rocky Mountain bighorn sheep in Alberta - Bentz, Jerry A. (University of Alberta, 1981)

Effects of partial cutting on diseases, mortality, and regeneration of Rocky Mountain aspen stands - Rocky Mountain Forest; Range Experiment Station (Fort Collins, Colo.) (Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1982)

Effects of thinning pole-sized lodgepole pine on understory vegetation and large herbivore activity in central Colorado - Crouch, Glenn LeRoy, 1929 - (Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1986)

Effects of varying certain cooking conditions in producing soda pulp from aspen - Surface, Henry E. (Henry Earl), 1883 -1920 (U.S. Dept. of Agriculture, 1914)

Effects on fishes of changes within the Kananaskis River system - Nelson, Joseph S. (Joseph Schieser), 1937 - (1962)

Die Eigenschaften und das forstliche Verhalten der wichtigeren in Deutschland vorkommenden Holzarten; ein Leitfaden für Studierende, Praktiker und Waldbesitzer - Hess, Richard Alexander, 1835 -1916 (P. Parey, 1905)

Eigenschaften und forstliches verhalten der wichtigeren in Deutschland einheimischen und eingeführten holzarten. Leitfaden für studierende, praktiker und waldbesitzer - Hess, Richard Alexander, 1835 -1916 (P. Parey, 1895)

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Einleitung in das natürliche System der Botanik; oder, Systematische Uebersicht der Organisation, natürlichen Verwandtschaften und geographischen Verbreitung des ganzen Pflanzenreichs, nebst Angabe des Nutzens der wichtigsten Arten in der Heilkunde, den Künsten und der Haus- und Feldwirtschaft - Lindley, John, 1799 -1865 (Verlage des Landes-Industrie-Comptoirs, 1833)

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Elementary flora of the Northwest - Rigg, George B. (George Burton) (American Book Company, 1914)

Elementary flora of the Northwest - Rigg, George B. (George Burton) (American book company, 1914)

The elements of forestry, designed to afford information concerning the planting and care of forest trees for ornament or profit and giving suggestions upon the creation and care of woodlands with the view of securing the greatest benefit for the longest time, particularly adapted to the wants and conditions of the United States - Hough, Franklin Benjamin, 1822 -1885 (R. Clarke, 1882)