Letters von Johnsen, K., Reese, W.M., Bond, R.S., Cron, L., Stage, A.R., McGee, C.E., Crutchfield, D.M., South, D.

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Five-year volume increment from nitrogen fertilization in thinned plantations of pole-size loblolly pine [Pinus taeda] von Wells C.G, Crutchfield D.M, Trew I.F

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two way median fit: a sensitive statistical procedure to detect response of trees to fertilization von Gerig, T.M, Schreuder, H.T, Crutchfield, D.M, Wells, C.G

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