M. RAJAVEL; R. P. SAMUI; L. S. RATHORE; R. BALASUBRAMANIA; K. GHOSH; N. CHATTOPADHYAY. Effect of Diurnal Variation of Atmospheric and Elevated Levels of Carbon-Di-Oxide and Photosynthetically Active Radiation on Intercellular Concentration and Rate of Photosynthesis in Maize and Safflower. J. Agrometeorol. 2010, 12, 1-7.