Jain, N.C. et al. 1971. Tannin Rich Materials as Partial-substitutes for Phenol/Extenders in Making Phenol-Formaldehyde Resin for Plywood. Indian Forester. 97, 3 (Mar. 1971), 145–148. DOI:https://doi.org/10.36808/if/1971/v97i3/26396.