Ravi, V., Hridya, C., Suchitra, S. and Byju, G. 2013. Rapid Method for Determining Total Chlorophyll, Chlorophyll a and b and Carotene Content in Leaves of Elephant Foot Yam Using SPAD Meter. JOURNAL OF ROOT CROPS. 37, 1 (Jul. 2013), 29–31.