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Vollmer, G. S. (1986). The effect of residue removal and burning on the growth of Festuca longifolia Thuill. and Festuca rubra L. subsp. commutata Gaud. established for seed production. (Master's thesis, Oregon State University). Retrieved from https://pdfs.semanticscholar.org/1db4/fe3d1b7cbe893a79a616ee05e43233595e6c.pdf