Singh, S.P. and Jain, R.C. 1987. Yield of Heartwood in <I>Acacia catechu</I> (Khair) for Use in Katha Manufacture. Indian Forester. 113, 6 (Jun. 1987), 404–408. DOI:https://doi.org/10.36808/if/1987/v113i6/9404.