Puri, G.S. 1950. Soil pH and Forest Communities in the <I>Sal</I> (<I>Shorea robusta</I>) Forests of the Dehra Dun Valley, U.P., India. Indian Forester. 76, 7 (Jul. 1950), 292–309. DOI:https://doi.org/10.36808/if/1950/v76i7/23225.