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A quick method of estimating cull in northern hardwood stands
W. M. Zillgitt · Lake States Forest Experiment Station
Sayfa sayısı yok · 1946
Hardwoods / Estimation / Valuation
Optimum economic stocking for northern hardwoods
W. M. Zillgitt · Lake States Forest Experiment Station, U. S. Department of Agriculture, Forest Service
14 sayfa · 1948
Hardwoods
Estimating cull in northern hardwoods
W. M. Zillgitt · Division of Forest Management, Lake States Forest Experiment Station
Sayfa sayısı yok · 1946
Cull tree felling
Northern hardwood cutting methods
Walter M. Zillgitt, University of Michigan. School of Forestry and Conservation · Yayınevi bilinmiyor
Sayfa sayısı yok · 1947
Forest productivity / Hardwoods