By Ghebremariam DS   Groenewald EG   Koch SH   Swart WJ   in South African Journal of Botany

ISSN:0254-6299|70|2|235-240

NISC Pty Ltd‎(2004)‎

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By Zwolinski J.B.   Swart W.J.   Wingfield M.J.   in Forest Ecology and Management

ISSN:0378-1127|72|2|293-298

Elsevier‎(1995)‎

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