Purushotham, A. and Tewari, M.C. 1954. A Preliminary Note on the Preparation, by a Simple Process, of Copper and Zinc Preservatives from Chir Resin. Indian Forester. 80, 9 (Sep. 1954), 560–568. DOI:https://doi.org/10.36808/if/1954/v80i9/23790.