E.V. Anoop, K. Gopikumar and Luckins C. Babu 1998. VISUAL SYMPTOMS AND CHLOROPHYLL PRODUCTION OF <em>AILANTHUS</em> <em>TRIPHYSA</em> SEEDLINGS IN RESPONSE TO NUTRIENT DEFICIENCY. Journal of Tropical Forest Science (JTFS) . 10, 3 (Mar. 1998), 304–311.