1. Some effects of fire on reproduction and growth of vegetation in northeastern Minnesota;Ahlgren;Ecology,1960
2. Ahlgren, C. E. (1970). Some effects of prescribed burning on jack pine reproduction in northeastern Minnesota. Minn., Agr. Exp. Sta., Misc. Rep. 94.
3. Effects of prescribed burning on soil microorganisms in a Minnesota jack pine forest;Ahlgren;Ecology,1965
4. The deterioration by fungi of jack, red, and white pine killed by fire in Ontario;Basham;Can. J. Bot.,1957
5. Microbes and nitrates in soils from virgin and young-growth forests;Bollen;Can. J. Bot.,1961