LITERATURE CITED
- PIENAAR , F. R.P. and BRONKHORST , B. 1982 . The creep deflection of S.A. pine timber in bending 256 NTRI Report, HOUT
- SUGIYAMA , H. 1967 . On the effect of loading time on the strength properties of wood. A review on Japanese research . Wood Science and Techn. , Vol 1 : 289 – 303 .