Froelich, R., Hodson, A.C., Schneider, A.E. and Duncan D.P., (1955), "Influence of Aspen Defoliation by the Forest Tent Caterpillar in Minnesota of the Radial Growth of Associated Balsam Fir", Minnesota Forestry Notes 45, School of Forestry, University of Minnesota
Minnesota Forestry Notes
Published as Sci. Jour. Ser. Paper No. 3421 of the Minn. Agr. Expt. Sta.
Froelich, Ronald; Hodson, A. C. (Alexander Carlton), 1906-1996; Schneider, A.E.; Duncan, D.P..
Influence of Aspen Defoliation by the Forest Tent Caterpillar in Minnesota of the Radial Growth of Associated Balsam Fir.
St. Paul, Minn. : School of Forestry, University of Minnesota.
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