Benchasri, Sorapong, and Charassri Nualsri. 2009. “Heritablity of Resistance to Cowpea Aphd (Aphis craccivora Koch) in Yard Long Bean and Cowpea.     ”. Thai Agricultural Research Journal 27 (3):275. https://doi.org/10.14456/thaidoa-agres.2009.19.