ouvrage

Internal defects associated with prune and nonpruned branch stubs in black walnut

A. Shigo ; E. Mc Ginnes ; D. Funk ; N. Rogers | Broomall [USA] : USDA, Forest Service, Northeastern Forest Experiment Station | 1979

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ouvrage

Proceedings IUFRO. Evaluation and planning of forestry research S6.06 - S6.06.01

D. Burns | Broomall [USA] : USDA, Forest Service, Northeastern Forest Experiment Station | 1986

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Disponible pour le prêt