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Summary of the proceedings of the hardwood establishment and management : London, Ontario ... 1990

R.A. Haig, J.N. Nolan and F.W. von Althen...
Bok Engelsk 1991

Hardwood planting on abandoned farmland in southern Ontario : revised guide

F.W. von Althen
Bok Språk ikke angitt 1990

Effects of planting date on outplant performance of cold-stored and fresh-lifted black walnut, red oak, and silver maple seedlings

F.W. von Althen
Bok Engelsk 1986

Spacing trials in black walnut, white ash and silver maple plantations

F.W. Von Althen
Bok Engelsk 1985

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