Sahu, B. N. “Studies on <I>Rauvolfia serpentina< I> (Benth.) - Effect of Farm Yard Manure, Ammonium Sulphate and Superphosphate on Growth and Yield of Roots”. Indian Forester, vol. 96, no. 9, Sept. 1970, pp. 680-9, doi:10.36808/if/1970/v96i9/26313.