TY - BOOK AU - Pushpadas M V AU - Haridasan V AU - Jayaratnam K TI - By-products and ancillary activities in rubber plantations PB - Handbook of natural rubber production in India. (Ed. P.N. Radhakrishna Pillay). Rubber Research Institute of India, Kottayam, India, pp. 505-514. KW - Ancillary income ER -