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L' Hirondelle, S. J., & Addison P. A. (1985).  Effects of SO2 on leaf conductance, xylem tension, fructose and sulphur levels of jack pine seedlings. 39, 373-386. Abstract
L' Hirondelle, S. J., Addison P. A., & Huebert D. B. (1986).  Growth and physiological responses of aspen and jack pine to intermittent SO2 fumigation episodes. 64, 2421-2427.
L., B. R. (2003).  Pileated woodpecker cavities : conservation methods-for planners and operation personnel. Unpublished brochure,
L., B. R. (2003).  Pileated woodpecker cavities : master builders of the forest. Unpublished brochure,
L., M. M. (1975).  Fort Mackay : a community profile : Northeast Alberta Regional Plan. 65.
La Fetra, A. A. (1956).  The Alaska Highway.
La Prairie, G. (1974).  Mining machines for tar sands extraction. In : Proceedings of the First Regional Conference of the Western Region, Engineering Institute of Canada, Edmonton, April 17-19, 1974. 113-120.
La Roi, G. H. (1992).  The Trees. In : Boreal Forest Conference : Proceedings, Oct. 4, 5, 6, 1991, Athabasca, Alberta, editor, Joan Sherman. 24-29.
La Roi, G. H. (1964).  An ecological study of the boreal spruce-fir forests of the North American taiga. 397.
La Roi, G. H., Ross M. S., & Ostafichuk M. (1983).  Structural dynamics of boreal forest ecosystems on three habitat types in the Hondo-Lesser Slave Lake area of north central Alberta in 1982. Volume 1. text. RMD-80/35A, Open File report 65A, 93.
La Roi, G. H., Ross M. S., & Ellis R. A. (1988).  Ecological monitoring research in Pinus banksiana-dominated forests of the Athabasca Oil Sands and Hondo-Slave Lake areas of Alberta during the period 1981 to 1984. RMD 87/42, 2 v. .
La Roi, G. H., & Ellis R. A. (1984).  The flora and vegetation around fire lookout towers and their access roads in western Alberta.
La Roi, G. H., & Ostafichuk M. (1982).  Structural dynamics of boreal forest ecosystems on three habitat types in the Hondo-Lesser Slave Lake area of north central Alberta in 1981. RMD-80.35A, Open File Report 64, 157.
La Roi, G. H., & Dugle J. R. (1968).  A systematic and genecological study of Picea glauca and P. engelmannii, using paper chromatograms of needle extracts. 46, 649-687.
La Roi, G. H., & Ostafichuk M. (1982).  Establishment and vegetation survey of 16 Pinus banksiana - dominated permanent plots for the Athabasca oil sands ecological monitoring project in 1981. 133 pages . Abstract
La Roi, G. H., Fuller W. A., & Raszewski A. D. (1971).  Canadian Committee for the International Biological Programme, Conservation of Terrestrial Biological Communities Subcommittee Region 2. Alberta. Terminal Report of the Alberta CT Consulting Panel - June 1974. Appendix 4. Brief concerning the provisional . 10.
La Roi, G. H., & Ostafichuk M. (1982).  Establishment and vegetation survey of 16 Pinus banksiana - dominated permanent plots for the Athabasca Oil Sands Ecological Monitoring Project in 1981. Open File Report RMD 34, 133 pages . Abstract
La Roi, G. L. (1967).  Ecological studies in the boreal spruce-fir forests of the North America taiga. I. Analysis of the vascular flora. 37, 229-253.
La Roi, G. H. (1967).  Taiga. In : Alberta : a natural history, edited by W. G. Hardy. Chapter 8, 151-169.
La Roi, G. H., & Hnatiuk R. J. (1980).  The Pinus contorta forests of Banff and Jasper National Parks: a study in comparative synecology and syntaxonomy. 50(1), 1-29.
La Roi, G. H. (1992).  Classification and ordination of southern boreal forests from the Hondo - Slave area of central Alberta. 70(3), 614-628.
La Roi, G. H., Ross M. S., & Ostafichuk M. (1983).  Structural dynamics of boreal forest ecosystems on three habitat types in the Hondo-Lesser Slave Lake area of north central Alberta in 1982. Volume 2. appendix. RMD-80/35A, Open File report 65B,
La Roi, G. H. (1975).  A description and delineation of the major plant community types along the Signal - Pyramid environmental transect in Jasper National Park. 291.
La Roi, G. H., Lee T. D., & Tande G. F. (1975).  A study of vegetation in relation to elevation and fire history in the Athabasca River valley near Jasper townsite, Jasper National Park. Contract No. WR 48-74,
La Roi, G. H., & Stringer M. H. L. (1976).  Ecological studies in the boreal spruce-fir forests of the North America taiga. II. Analysis of the bryophyte flora. 54, 619-643.