Adeosun, B.F., Olaofe, . and Ajayic, J.D. 2003. QUALITY PARAMETERS OF SOME NATURAL RUBBER (NR) CLONES INDIGENOUS TO NIGERIA. II. IONIC CONTENT, STABILITY AND DEGRADATION RESISTANCE OF NATURAL RUBBER. Biological Sciences - PJSIR. 46, 1 (Feb. 2003), 10–13.