“?GENETIC STUDIES OF COTTON (GOSSYPIUM HIRSUTUM L) I. COMBINING ABILITY AND HETEROSIS STUDIES IN YIELD AND YIELD COMPONENTS”. Biological Sciences - PJSIR, vol. 41, no. 1, Feb. 1998, pp. 54-56, https://www.v2.pjsir.org/index.php/biological-sciences/article/view/2231.