India. Public Works Department, Gums and resinous products of India; being a collection of reports received from the several governments and administrations of India. Calcutta, 1871
Indian Lac Cess Committee, The Indian Lac Cess Act, 1930; Rules; Provident Fund Rules; Delegations made under the Act or under the Rules; Appendix (corrected up to 30 June 1938). Ranchi, 1938
Cross, Robert, Report on the investigation and collection of plants and seeds of the india-rubber trees of Para and Ceara and balsam of Copaiba. London, 1877