References
- Berry , F. H. 1965 . Treat stumps to prevent Fomes annosus in shortleaf pine plantations. CS–34 , 4 Columbus , Ohio. : U.S. Forest Service Research Note, Central States Forest Experiment Station .
- Keay , R. W. J. , Onochie , C. F. A. and Stanfield , D. P. 1964 . Nigerian Trees Vol. 1 , (rev.), III + 334 pp., Vol. 2, V + 495 pp. Federal Dept. of Forest Research, Ibadan, Nigeria.
- Rubber Research Institute of Malaya . 1964 . Root diseases of Hevea , R.R.I. Plant. Bull. No. 75.