1. School of Agricultural and Forest Sciences, University of Wales, Bangor, Gwynedd. LL57 2UW. United Kingdom; Sokoine University of Agriculture, Faculty of Forestry and Nature Conservation Department of Wood Utilization, P.O. Box 3014, Morogoro,
Tanzania.
2. Sokoine University of Agriculture, Faculty of Forestry and Nature Conservation Department of Wood Utilization, P.O. Box 3014, Morogoro, Tanzania.