Thomas, B. and Sreekumar, S. (2006) “Combining ability for biological nitrogen fixation traits and yield components in black gram [<i>Vigna mungo</i> (L.) Hepper]”, Journal of Tropical Agriculture, 39(2), pp. 93–97. Available at: https://jtropag.kau.in/index.php/ojs2/article/view/31 (Accessed: 29 April 2024).